where are the greddy sc owners??????????????

[mackshackgabe]

yes, i did search!!!!!!!!


what happend to the sc'ed gt-s's in here?????? nobody's talking about it anymore!! there's only one dyno posted here from an auto and that's it??? and only one vid of a celica standing in the middle of the street for 3 minutes and then doing a quick flyby??? (nice sound by the way :p: ) why arent people talking about it that much, posting dyno's, videos, racing stories etc........ please fill me in because im curious, was the first bach of superchargers small and not that many people got them???......people that got them havent installed them yet........??????

just wondering why people havent talked about greedys', posted dyno's or videos that much lately :confused:

[celicajonz]

+1

[Gravel]

yes, i did search!!!!!!!!


what happend to the sc'ed gt-s's in here?????? nobody's talking about it anymore!! there's only one dyno posted here from an auto and that's it??? and only one vid of a celica standing in the middle of the street for 3 minutes and then doing a quick flyby??? (nice sound by the way :p: ) why arent people talking about it that much, posting dyno's, videos, racing stories etc........ please fill me in because im curious, was the first bach of superchargers small and not that many people got them???......people that got them havent installed them yet........??????

just wondering why people havent talked about greedys', posted dyno's or videos that much lately :confused:

I don't think many people have them or at least have them fitted. I have one which is currently being bolted on - hopefully I'll get my car back on Friday :)

[mackshackgabe]

I don't think many people have them or at least have them fitted. I have one which is currently being bolted on - hopefully I'll get my car back on Friday :)
sweet!!!! just in time for the weekend:-D , i hope u'll post some dynos or vids, an acceleration speedometer video would be awesome!!! im sure im not the onlyone who whould like to know how fast a sc'ed gt-s accelerates 0-60 , 1/4 etc!!!!!!!!!!!

[nyoneway]

After the initial batch, there's a backlog of backorders and a subsequent $400 price increase. I'm still waiting for mine.

[SirCharlesC7]

.

[Gravel]

sweet!!!! just in time for the weekend:-D , i hope u'll post some dynos or vids, an acceleration speedometer video would be awesome!!! im sure im not the onlyone who whould like to know how fast a sc'ed gt-s accelerates 0-60 , 1/4 etc!!!!!!!!!!!

Well I can't promise anything, but I will see what I can do! I'm just hoping that I will get it back before the weekend, and will still be able to afford to put petrol in after paying for the install :chuckles:

[matadorgts]

After the initial batch, there's a backlog of backorders and a subsequent $400 price increase. I'm still waiting for mine.


Same here, still waiting.

[Gravel]

Same here, still waiting.

The only upside is that you'll have time to source all the other bits - e.g. gauges,harnesses etc. that you'll need before your s/c arrives. My install has certainly been held up by related, but not essential kit, not being available as expected.

The delay should also flush out any top-tips/gotchas that the first few brave/mad souls discover.

[stevefox42]

yup, waiting on mine. i'll have dynos/pics/videos when i get mine.

[ucmd03]

well, i should hopefully have something by next week for you. install is happening this weekend via Tuned Innovations, with dyno tune on wideband. so pray for me!

[WhiteCeli65]

yep the $400 increase in price tag made me think twice before buying one. Also, I heard the a/f ratio is horrible with the preloaded base map so more tuning = $$$, another factor that made me think twice.

I've had greddy piggy backs before and all of them have run rich and fine. Too bad you can't just use the preloaded stuff on the ultimate

[ucmd03]

sold my ultimate on ebay for 450, which makes the kit really, really reasonable

[ahnjae]

i got the SC on a dbw......ill be hitting the tracks this sunday and again next sunday so ill let u know my times....other than that im still having problems reading no vacuum whatsoever on my gauge.......hmmmmm.....

[mackshackgabe]

sweet!!!!!!!!! looks like there are a couple of installs going on this weekend, please post some vids, times, dynos for us N/A guys :-/ hmmmm.........im soooo jealous of u guys!!!!!!!!!!!!!!!!!!!

[jlitman]

I'm having the temp sensor spliced in and cold-engine tune done tomorrow (finally!) and will also get a new dyno test, so I should have updates soon... Has anyone else dynoed theirs yet? Other than that, my untuned dyno is posted and it's been running great once it reaches normal operating temperature.

[Gravel]

I'm having the temp sensor spliced in and cold-engine tune done tomorrow (finally!) and will also get a new dyno test, so I should have updates soon... Has anyone else dynoed theirs yet? Other than that, my untuned dyno is posted and it's been running great once it reaches normal operating temperature.

I'm hoping mine's going to come back tuned and temp-compensated too - I got them to order in a replacement harness to fix the temp wires the kit one leaves out.

Not sure when I'll have a dyno though, but I should have enough gauges to be able to report back on boost levels and AFR.

[milesplume]

i have gotten 14.00 in the 1/4 on street tires and an open differential spinning through 1st and second gear and im untunned

[BgLtUsE]

When I receive mine, I will post plenty of vids for ya'll.

[jlitman]

Here are some updates and various before and after dynos with SAE corrections (note that the initial dyno uncorrected was 141 before and 188 after, whereas with correction it was 132 and 171 respectively, so about the same boost in power, just more modest numbers.)

The chart shows SAE corrected whp N/A, supercharged with reset ecu, and supercharged with ecu that has been driven.

http://www.newcelica.org/photopost/data/500/17432celica2zz-med.jpg

As all the tuning I've had done has been low RPM, partial throttle type stuff, my tuner thinks that the ECU pulled some timing which is what caused the drop in power (apparently it would occasionally ping a little bit initially at higher RPM's...). Also, the temp was 60 F during initial run and over 80 today, so that's part of it as well (maybe I'll look into an aftercooler?). Anyway, thoughts or suggestions are welcome -- are there colder irridium plugs I could switch to? :confused:

Despite the slight loss in power, performance hasn't suffered any (still 0-60 just under 7.0 on a crappy launch -- a vast improvement from , the 8.6 I had after lightweight wheels, TC, and some weight redux, and much, much faster than the 9.5 - 10 seconds bone stock) so I guess I can't complain, but my goal of 200 whp seems a bit farther off now... Next up is VVT tuning with a camcom witrhin the next month or so -- will keep everyone posted!

(P.S. Damn it -- they forgot to send me a graph that shows wtq ... grrr. Will post that soon.)

[Gravel]

Hi Jiltman - has the temp sensor wiring made any difference to your cold-start running?

I'm still hoping to get my car back tomorrow, but it sounds like they're way behind so it might just be running the base maps :rolleyes:

[ahnjae]

im running on the pregrogrammed emanage with street tuned camcon.....ill be getting an alcohol injection to use like an intercooler .............

[Gravel]

im running on the pregrogrammed emanage with street tuned camcon.....ill be getting an alcohol injection to use like an intercooler .............

So, have you changed your lift point, and if so, to what?

From the few dynos so far, the lift changeover seems to be less dramatic with a s/c - is lift still that important once you have all that torque low down?

[ahnjae]

im running on the pregrogrammed emanage with street tuned camcon.....ill be getting an alcohol injection to use like an intercooler .............

So, have you changed your lift point, and if so, to what?

From the few dynos so far, the lift changeover seems to be less dramatic with a s/c - is lift still that important once you have all that torque low down?

no you cant change the lift point with the camcon.....i havnt heard of anything else that can except for the PFC.......lift is still good, it deffenetly feels fast during lift.....

[6speedGTS]

Sounds like you should try to use water alcohol injection first, the washer reservoir should be big enough for the job but also look at the Gready intake manifold and see if you can some how shoe horn an air to water intercooler. I have not seen enough of the set up to even say it can work, what I am thinking is that when you fit the coil in in might choke the air flow when not using boost but nobody else I know of have not said that it can be done. Any other opions on that?

[ahnjae]

Sounds like you should try to use water alcohol injection first, the washer reservoir should be big enough for the job but also look at the Gready intake manifold and see if you can some how shoe horn an air to water intercooler. I have not seen enough of the set up to even say it can work, what I am thinking is that when you fit the coil in in might choke the air flow when not using boost but nobody else I know of have not said that it can be done. Any other opions on that?

im not shure about that but all i know is if you plan on runing a mixture of alcohol/water you will need to do tuning.....thats why im trying to stick with just alcohol....but then again im not very to familiar with this type of intercooler, its kind of new to me but it sounds like a good idea especially with the greddy SC.....any insight of this system from anyone will deffenetly be appreciated!!

[jlitman]

Hi Jiltman - has the temp sensor wiring made any difference to your cold-start running?

I'm still hoping to get my car back tomorrow, but it sounds like they're way behind so it might just be running the base maps :rolleyes:

Yes and no -- after giving it a chance to cool down to see how it runs it is much better but still just a little off, so I think I will go back for a bit more adjustment.

The shop said that if I need more fine tuning, I can pretty much just drop by (guess I'm kind of a regular there now :) ). A little more tweaking and it should be perfect.

Part of the problem with this last leg of fine tuning is you have to wait for the engine to completely cool down before you can really see how it will run, so the trial and error process is a little more of a PITA. I've let it sit now for several hours, and the temp has dropped, so we'll see if I go out tonight how it runs.

EDIT: Nearly perfect ... I think it needs a little more enrichment for engine temps of < 60 F ... stay tuned.

[mackshackgabe]

When I receive mine, I will post plenty of vids for ya'll.


sweet!!!!!!!!!!!! , need sum help with the install???? never installed one of these ,but id be more than happy to help, and watch since i can't afford one of my own yet :-D !!!!!!!!!!!

[BgLtUsE]

sweet!!!!!!!!!!!! , need sum help with the install???? never installed one of these ,but id be more than happy to help, and watch since i can't afford one of my own yet :-D !!!!!!!!!!!

Well, since I work at a honda dealership, I have a tech there that will help me install. He's actually gonna make sure I do it right. I have never installed a S/C either, but I will be doin most of the work. I think this is a great opportunity for me to learn more about my car. You're more than welcomed to come and watch.

[jlitman]

So, have you changed your lift point, and if so, to what?

From the few dynos so far, the lift changeover seems to be less dramatic with a s/c - is lift still that important once you have all that torque low down?

There's a home brewed lift controller in the works and, according to Power Enterprises, a new Camcon is in development that will do this, but for now, only a stand alone such as the PFC can change when lift is activated.

[slvceli]

Here are some updates and various before and after dynos with SAE corrections (note that the initial dyno uncorrected was 141 before and 188 after, whereas with correction it was 132 and 171 respectively, so about the same boost in power, just more modest numbers.)

The chart shows SAE corrected whp N/A, supercharged with reset ecu, and supercharged with ecu that has been driven.

http://www.newcelica.org/photopost/data/500/17432celica2zz-med.jpg

As all the tuning I've had done has been low RPM, partial throttle type stuff, my tuner thinks that the ECU pulled some timing which is what caused the drop in power (apparently it would occasionally ping a little bit initially at higher RPM's...). Also, the temp was 60 F during initial run and over 80 today, so that's part of it as well (maybe I'll look into an aftercooler?). Anyway, thoughts or suggestions are welcome -- are there colder irridium plugs I could switch to? :confused:

Despite the slight loss in power, performance hasn't suffered any (still 0-60 just under 7.0 on a crappy launch -- a vast improvement from , the 8.6 I had after lightweight wheels, TC, and some weight redux, and much, much faster than the 9.5 - 10 seconds bone stock) so I guess I can't complain, but my goal of 200 whp seems a bit farther off now... Next up is VVT tuning with a camcom witrhin the next month or so -- will keep everyone posted!

(P.S. Damn it -- they forgot to send me a graph that shows wtq ... grrr. Will post that soon.)
You really need to get your header ported by boosted2.0. I bet that a ported header will give you better gains than the camcon plus tuning. With the sc you should see very nice gains. Besides, if you plan on getting a header and water injection later, you will want to retune again.

[Gravel]

** URGENT ** Does anyone know what you're supposed to do with the air injection system when you fit the s/c - my shop tried removing it but that threw a CEL, so they've just left it wired in but without any air-lines for now. What's the right thing to do?

My car is UK spec by the way.

[6speedGTS]

It's used for emissions on start up, leave it in and use it if it's not in the way.

[ahnjae]

what do you guys think about getting a dc sport header instead of porting out the stock one? I know that that the DC header didnt give anytype of gains but has anyone tested one out with a SC setup? I would think you would get gains from it.

[sbocaj55]

I had expected to get mine installed last week, but polishing everything on my own is taking way longer than expected. I only got the valve cover done. Being at school sucks...I have 2 more months to wait until I can sit home...til then it collects dust. I'll definitely post updates when I get it installed...but...that's pretty far off.

[BgLtUsE]

I'm gettin irritated cuz of the wait. :sadwave:

[Gravel]

Well, I should now get my car back within the next 12 hours! Apparently the base map was way too rich. I will let you all know what the car is like to drive.

[Korben007]

sorry been getting alot of bad weather here in the mountains so the celica has been sittin in the garage for a while. im supposed to get tuning done begining of april with the PowerFC. I definately wanna go stand alone. I will update you guys as soon as i get the tuning done. I feel there is alot more potenial from this kit once you get it tuned. I just got a new intake filter and MAF meter so I am waitinf for those to come in before the tuning then i will be on my way!!!

[Gravel]

Just got home with this:

http://digits.smugmug.com/photos/60358098-L.jpg

It has had quite a bit of road tuning and it seems to be running very well indeed.

[stevefox42]

Mmmm....Supercharger....gggghhhhhllllll

[larryd]

So when are we expecting dynos on a 6spd?

[Gravel]

So when are we expecting dynos on a 6spd?

I'm not going to dyno mine until my new clutch and LSD are fitted - I want to know the full drivetrain loss. So probably early April I'm afraid.

[jlitman]

So when are we expecting dynos on a 6spd?

I'm not going to dyno mine until my new clutch and LSD are fitted - I want to know the full drivetrain loss. So probably early April I'm afraid.

Looking forward! In the meantime, how about a stopwatch timed 0-100 Km run to give us an idea? :)

Also, how's that CAI working out for you?

[Gravel]

Looking forward! In the meantime, how about a stopwatch timed 0-100 KM run to give us an idea :)

Also, how's that CAI working out for you?

My plan is to head off to bed soon and be up before the sun for a quick drive on my local fast roads - I have a load of 70mph road with superb visibility and very little traffic early on a Sunday ;)

I don't have enough hands for a stopwatch, I might try an in car video with my digi-cam - but I don't know how to fix it so that I can get the speedo - might have to guestimate from the gear-changes on the audio!

[Gravel]

For those of you who want to know what it sounds like - here you go:

http://media.putfile.com/sc-vid2

It is not a particularly good 0-70 sprint, but I'm no drag racer :burnout:

[celicajonz]

sounds nice....

[Kuz]

sounds nice....

:werd: but i couldnt hear lift much.... is the supercharger that loud that it drowns out the sound of lift?

[Gravel]

:werd: but i couldnt hear lift much.... is the supercharger that loud that it drowns out the sound of lift?

Lift doesn't seem to matter anymore - it just pulls and pulls and pulls right up to the redline. I really can't feel the lift point anymore if I'm in boost - it is quite possible to hover in lift on part throttle and not be in boost.

One really nice thing is that the supercharger is almost silent when you're off boost - you still get all that lovely woofly N/A intake noise.

[celicajonz]

hmmm... i wonder what the kazuma would sound like with this s/c?!?!?! :naughty:

[larryd]

hmmm... i wonder what the kazuma would sound like with this s/c?!?!?! :naughty:


loud :)

[stevefox42]

that video from Gravel looks like 0-60 in about 6secs

[GTS 6speed]

sounds nice, I plan to get a greddy kit here in the next few months
________
Agnelle live (http://camslivesexy.com/cam/Agnelle)

[celicajonz]

that video from Gravel looks like 0-60 in about 6secs



it does...

[X-EVIL-X]

it should be faster didnt seem like he really launched it just slowly started in first then punched it

[stevefox42]

any guesses on what it could/should be? 5.5secs?

[X-EVIL-X]

no way to tell yet

[matadorgts]

I can't wait.

:king:

[jlitman]

that video from Gravel looks like 0-60 in about 6secs

Nice vid! Can't wait to see what numbers you're putting down on the dyno, Gravel! :thumbup:

Used a stopwatch while viewing -- I make it to be about 6.20 seconds (give or take a few tenths). Don't know what RPM you launched at, but for comparison, my AT (without a CAI) has been running 0-60 between 6.8 and 7.0 with the S/C (not exactly earth shattering, but an amazing improvement over the auto's terrible stock performance!), so I'm sure you can get even faster times.

[mackshackgabe]

Well, since I work at a honda dealership, I have a tech there that will help me install. He's actually gonna make sure I do it right. I have never installed a S/C either, but I will be doin most of the work. I think this is a great opportunity for me to learn more about my car. You're more than welcomed to come and watch.


let me know the when and where :-D

[mackshackgabe]

i stopwatched the video and got 5.2 secs 0-60 , not bad :-D

[Gravel]

it should be faster didnt seem like he really launched it just slowly started in first then punched it

Yes indeed I din't have any rpm built up out of mechanical sympathy and plain fear - just hand brake off and foot to the floor - despite that I got quite a lot of wheelspin and a smell of burning clutch and/or tyres :chuckles:

[Gravel]

Nice vid! Can't wait to see what numbers you're putting down on the dyno, Gravel! :thumbup:

Used a stopwatch while viewing -- I make it to be about 6.20 seconds (give or take a few tenths). Don't know what RPM you launched at, but for comparison, my AT (without a CAI) has been running 0-60 between 6.8 and 7.0 with the S/C (not exactly earth shattering, but an amazing improvement over the auto's terrible stock performance!), so I'm sure you can get even faster times.

Cheers - I'm looking forward to getting a dyno run too - just gotta find the time and save my pennies to get the new clutch and LSD in. That's also going to mean another 2-3 days off the road, and given that I've only just got it back after 8 days in the shop, I want to drive it for a bit first!

[Gravel]

It's used for emissions on start up, leave it in and use it if it's not in the way.

OK, so after two fun days driving, my car's just thrown a CEL on cold-startup. I am 90% sure that it's the air injection system, what have you guys in the US done with it? From what I can see, it requires a filtered air supply to inject into the exhaust, but there doesn't seem to be anywhere obvious to take one from.

[BgLtUsE]

i stopwatched the video and got 5.2 secs 0-60 , not bad :-D

Yea, It seems from 0-60 in the mid 5's. I will let you know as soon as I get my kit in. I don't know when that will be though, but I'm hoping soon because I am really tired of waiting for it.

[Gravel]

Yea, It seems from 0-60 in the mid 5's. I will let you know as soon as I get my kit in. I don't know when that will be though, but I'm hoping soon because I am really tired of waiting for it.

I'm not sure how much you should read into my vid - I think my digi-cam took it at 640x480, 15 fps but my MPEG converter spat out 320x240 30fps, so it's not that scientific! It was a lot of fun though ;)

[matadorgts]

Gravel, how does your car feel overall...? Do you feel the difference in power? I can see that the lift transition is not as noticeable. but does it have a nice pull to it?

[Sguerra923]

Is the GReddy SC street legal/carb?

[milesplume]

no

[milesplume]

http://www.newcelica.org/forums/showthread.php?t=203721 go here and watch me race i am spinning in 1st and 2nd(it breaks loose after take off around 5.5k rpm from the tq, back-fireing, untunned, and raceing in 30 degree whether i get it dyno tunned tom. later guys

[Gravel]

Gravel, how does your car feel overall...? Do you feel the difference in power? I can see that the lift transition is not as noticeable. but does it have a nice pull to it?

This may sound like an odd thing to say, but it actually feels a bit slower! Don't get me wrong - there is tons of grunt and full boost from about 2.5-3k rpm, but the acceleration is so constant that you really can't feel just how fast you're going!

The lift transition is totally seamless IMHO - but that's a very,very good thing! I have heard it said that the kick on lift in N/A cars is actually due to the fact that you have a power drop around 5k and then you suddenly get back on track as the valves open up further. With the s/c on boost I really can't feel lift - I can go from 3k rpm to 8k and it just gets faster and faster and faster. 1st and 2nd are a bit brutal though - 6k -> limiter just vanishes in the blink of an eye, and hitting the limiter results in rather sudden deceleration as does coming off boost while still in lift.

It really is a bit odd to drive - you can be doing lift on part throttle and it sounds stock - floor it and you've got instant boost and that wonderful whine :) It is great fun :)

[jlitman]

This may sound like an odd thing to say, but it actually feels a bit slower! Don't get me wrong - there is tons of grunt and full boost from about 2.5-3k rpm, but the acceleration is so constant that you really can't feel just how fast you're going!

The lift transition is totally seamless IMHO - but that's a very,very good thing! I have heard it said that the kick on lift in N/A cars is actually due to the fact that you have a power drop around 5k and then you suddenly get back on track as the valves open up further. With the s/c on boost I really can't feel lift - I can go from 3k rpm to 8k and it just gets faster and faster and faster. 1st and 2nd are a bit brutal though - 6k -> limiter just vanishes in the blink of an eye, and hitting the limiter results in rather sudden deceleration as does coming off boost while still in lift.

It really is a bit odd to drive - you can be doing lift on part throttle and it sounds stock - floor it and you've got instant boost and that wonderful whine :) It is great fun :)

I had the same observation -- I can only tell that I'm going faster based on the rate of change in the speedo and the fact that other cars that were next to me are now behind me :p:

Regarding the transition into lift, if you take a look at my dyno, there is no longer a big drop in power just before going into lift as there was stock. With the S/C there's only a slight drop immediately after transition, and then power output climbs again. I suspect that the dyno will look even smoother with some VVT tuning :headbang:

[Gravel]

Hi Jiltman - have you found a way to come smoothly off boost when in lift? I keep finding I zoom up to the speed I'm after, lift off the throttle a bit and bang - out of boost - only in lift at 7k rpm or so and the sudden deceleration has me lurching forward in my seat and locking up my seat-belt!

I guess it's all part of the gentle creep of increasing acceleration - you just don't realise how much you're being pressed into your seat until you lift off the power or hit the limiter :D

[6speedGTS]

OK, so after two fun days driving, my car's just thrown a CEL on cold-startup. I am 90% sure that it's the air injection system, what have you guys in the US done with it? From what I can see, it requires a filtered air supply to inject into the exhaust, but there doesn't seem to be anywhere obvious to take one from.

That I don't know about I have a 2002, (thank god) but it should have somthing on the unit it's self, using somthing like some cheap filter that is used on a window mounted A/C, or mabye it comes form the main air filter it's self some how.

[matadorgts]

Gravel, how does your car feel overall...? Do you feel the difference in power? I can see that the lift transition is not as noticeable. but does it have a nice pull to it?

This may sound like an odd thing to say, but it actually feels a bit slower! Don't get me wrong - there is tons of grunt and full boost from about 2.5-3k rpm, but the acceleration is so constant that you really can't feel just how fast you're going!

The lift transition is totally seamless IMHO - but that's a very,very good thing! I have heard it said that the kick on lift in N/A cars is actually due to the fact that you have a power drop around 5k and then you suddenly get back on track as the valves open up further. With the s/c on boost I really can't feel lift - I can go from 3k rpm to 8k and it just gets faster and faster and faster. 1st and 2nd are a bit brutal though - 6k -> limiter just vanishes in the blink of an eye, and hitting the limiter results in rather sudden deceleration as does coming off boost while still in lift.

It really is a bit odd to drive - you can be doing lift on part throttle and it sounds stock - floor it and you've got instant boost and that wonderful whine :) It is great fun :)


Your words are music to my ears, thanks man, I'm counting the minutes...

[Gravel]

That I don't know about I have a 2002, (thank god) but it should have somthing on the unit it's self, using somthing like some cheap filter that is used on a window mounted A/C, or mabye it comes form the main air filter it's self some how.

Cheers - I managed to clear the CEL by resetting the ECU. I think I'll invest in an OBD II scanner to decode and reset the error code next time - I think the ECU's just not 100% happy being half in charge of a supercharged engine!

[jlitman]

Hi Jiltman - have you found a way to come smoothly off boost when in lift? I keep finding I zoom up to the speed I'm after, lift off the throttle a bit and bang - out of boost - only in lift at 7k rpm or so and the sudden deceleration has me lurching forward in my seat and locking up my seat-belt!

I guess it's all part of the gentle creep of increasing acceleration - you just don't realise how much you're being pressed into your seat until you lift off the power or hit the limiter :D

Perhaps because I have an automatic, when I drop out of lift I don't feel the same loss of boost between gears, so it's nice and smooth. However, if I let off of the gas suddenly, the whole chassis will shake from coming off of boost and I am lurched forward exactly as you described. Very jarring. I love it. :D

[jlitman]

That I don't know about I have a 2002, (thank god) but it should have somthing on the unit it's self, using somthing like some cheap filter that is used on a window mounted A/C, or mabye it comes form the main air filter it's self some how.

Cheers - I managed to clear the CEL by resetting the ECU. I think I'll invest in an OBD II scanner to decode and reset the error code next time - I think the ECU's just not 100% happy being half in charge of a supercharged engine!

That's a temporary fix, tho'. I could swear another fellow with the air-injection figured out how to work around this problem ... maybe Korben007? Try PMing him for advice. Good luck!

[Gravel]

Perhaps because I have an automatic, when I drop out of lift I don't feel the same loss of boost between gears, so it's nice and smooth. However, if I let off of the gas suddenly, the whole chassis will shake from coming off of boost and I am lurched forward exactly as you described. Very jarring. I love it. :D

:chuckles: Time for another ride in the Vomit Comet :chuckles: Now, let's see, shall I drive in boost, lift or boosted lift ;)

[mackshackgabe]

so in lamens temrs, you guys are saying that the car doesnt actualy "feel" faster (its not a lot torquier than it was beffore)? please explain :-D

[jlitman]

so in lamens temrs, you guys are saying that the car doesnt actualy "feel" faster (its not a lot torquier than it was beffore)? please explain :-D

Look at my dyno -- it's got more torque and power -- even with my ECU retarding ignition a bit and massive AT drivetrain losses, there's a proportionately big jump in power and subsequent performance. Of course, we're still talking a lot more power than torque, so the engine is still fairly uneven in terms of what it can do and at what specific RPM. The curves are about the same, just the output is greater. Oh, and the loss of power before lift is gone -- that's not a bad thing!

As to how it feels ... think about it: The GT-S only really feels fast in lift, and only then because Toyota deliberately engineered the 2ZZ to have that big drop in power just before the cam profile changeover. However, with the S/C, that drop in power is no longer there, so the thrill (illusion) of lift is diminished, but the end result is less "feels fast" for more "is actually fast". Personally, I'm happy with that trade ;)

[Firefighter1]

So if it is not CARB exempt how do you get around the smog check? If a smog check even applies to you. In cali I am sure you are screwed. In Nevada though they just plug in and run the ck. Will it pass?

Oh yeah. Car sounds awesome. Great job.

[Gravel]

Look at my dyno -- it's got more torque and power -- even with my ECU retarding ignition a bit and massive AT drivetrain losses, there's a proportionately big jump in power and subsequent performance. Of course, we're still talking a lot more power than torque, so the engine is still fairly uneven in terms of what it can do and at what specific RPM. The curves are about the same, just the output is greater. Oh, and the loss of power before lift is gone -- that's not a bad thing!

As to how it feels ... think about it: The GT-S only really feels fast in lift, and only then because Toyota deliberately engineered the 2ZZ to have that big drop in power just before the cam profile changeover. However, with the S/C, that drop in power is no longer there, so the thrill (illusion) of lift is diminished, but the end result is less "feels fast" for more "is actually fast". Personally, I'm happy with that trade ;)

:werd: I am a huge fan of lift - I can land in it 95% of the time between gears, and I used to regularly drop from 6th to 3rd at 60-70 mph to blast past a 14-wheeler on the motorway. I have also spent many an enjoyable drive on twisty country roads stirring that box like there's no tomorrow. If you drive in lift a N/A GT-S/190/T-sport is a pretty quick car. It feels really fast once you hit lift because you suddenly get 20 or 30HP in one go around 6k rpm, if however you find yourself sitting at 3-4k rpm and you need to overtake something you are buggered.

This supercharged lark is totally different. Floor it at 3k rpm and you get a noticeable kick in the back. Hit 4 or 5k and and the push is stronger, sail through 6,7 and 8k and the power just keeps on coming but totally smoothly - come off the power in boosted lift and you experience massive deceleration which is the first point you realise just how much shove you had in your back at 8k. It just creeps up on you. Drive it like a N/A car and it's a bit scary - pull away on a roundabout 1st gear, 2k,3k,5,6,7,8k into 2nd 6k,7,8 bang into 3rd 6,7,8k - bloody hell where did all the traffic go? It just feels like if the rev-limit were 10k, it would just keep on going - you could weld it 3rd and not care :)

It just doesn't feel as exciting if you're on a deserted road because it is hard to judge your acceleration - trees at 60 are trees at 60! But get into everyday traffic - pull out to overtake something - vrrrooom, whiiirrrrr - where'd he go? It really is quite surprising! Which is nice!

[jlitman]

:werd: I am a huge fan of lift - I can land in it 95% of the time between gears, and I used to regularly drop from 6th to 3rd at 60-70 mph to blast past a 14-wheeler on the motorway. I have also spent many an enjoyable drive on twisty country roads stirring that box like there's no tomorrow. If you drive in lift a N/A GT-S/190/T-sport is a pretty quick car. It feels really fast once you hit lift because you suddenly get 20 or 30HP in one go around 6k rpm, if however you find yourself sitting at 3-4k rpm and you need to overtake something you are buggered.

This supercharged lark is totally different. Floor it at 3k rpm and you get a noticeable kick in the back. Hit 4 or 5k and and the push is stronger, sail through 6,7 and 8k and the power just keeps on coming but totally smoothly - come off the power in boosted lift and you experience massive deceleration which is the first point you realise just how much shove you had in your back at 8k. It just creeps up on you. Drive it like a N/A car and it's a bit scary - pull away on a roundabout 1st gear, 2k,3k,5,6,7,8k into 2nd 6k,7,8 bang into 3rd 6,7,8k - bloody hell where did all the traffic go? It just feels like if the rev-limit were 10k, it would just keep on going - you could weld it 3rd and not care :)

It just doesn't feel as exciting if you're on a deserted road because it is hard to judge your acceleration - trees at 60 are trees at 60! But get into everyday traffic - pull out to overtake something - vrrrooom, whiiirrrrr - where'd he go? It really is quite surprising! Which is nice!
^^^ Well said! Yep, suddenly the engine is alive below 6K RPM's -- and it's great! Even the auto is a contender now -- the S/C is worth every penny! The next person with an AT who wants to know what to do to get more power at a more or less affordable price without the hassle of swapping the drivetrain, this is the answer!

[SirCharlesC7]

I'll take 2!:D

[Sguerra923]

damn sucks that the supercharger isn't legal ... damn..

[6speedGTS]

damn sucks that the supercharger isn't legal ... damn..


If enough of you guys from California expresses interest to Greddy maybe they will get it CARB cert. It takes some money to get it CARB Cert so there has to be enough people to make it happen.

[milesplume]

k i dyno tunned my car for only 2 hours and the only thing that we touched was the a/f ratio...my tunner said that greddy did a half ass job and that they have the a/f set off to read off of the trottle position sensor and not off of the mafs so he said that if we clean up the air flow more and put some timing back in and convert the a/f map to read from the mafs instead of the throttle position so the ecu knows exactly how much air is going in...so he said after all that is done we can easilly see 240whp and maybe more! right no i am at 223.0whp in fourth gear...tell me what u guys think

[Sguerra923]

If enough of you guys from California expresses interest to Greddy maybe they will get it CARB cert. It takes some money to get it CARB Cert so there has to be enough people to make it happen.

Well hopefully we can make this happen... but if it was already carb cert. i would jump on this like white on rice! lolz

[Gravel]

Who's got a boost gauge on their Greddy s/c setup? My Defi boost gauge tells me I get pretty constant 0.6 bar when in boost, but what's worrying me is that it occasionally peaks at 0.9 bar for a tiny fraction of a second (I know this because it logs peak values). It seems to happen when I come off boost suddenly right at the top of the rev-range - or if I accidentally hit the limiter.

So, is it a problem, and if so how do I cure it?

Also, what's happening mechanically to cause such a peak? The s/c doesn't compress any air, just pumps it at a constant rate (for a given rpm) into the inlet header. Even if I come off the throttle suddenly, surely the valves are still opening up at the same rate and releasing the pressure in the inlet manifold?

[mackshackgabe]

not that i do it often :-/ but i love how when ur racing in 3rd on the freeway and ur dead even with a car and u know ur gona beat the sh#% out of him once the tach gets to 6k :-) ill miss my 30shot, aka lift :-(

[Gravel]

not that i do it often :-/ but i love how when ur racing in 3rd on the freeway and ur dead even with a car and u know ur gona beat the sh#% out of him once the tach gets to 6k :-) ill miss my 30shot, aka lift :-(

Oh, no you won't - you can either drive in 4th in boost and drop back to 2nd or 3rd to hit lift, or you cruise into lift on part-throttle and then floor it to get boosted lift all of a sudden. Believe me, this is so much better than just having lift! ;)

[jlitman]

Who's got a boost gauge on their Greddy s/c setup? My Defi boost gauge tells me I get pretty constant 0.6 bar when in boost, but what's worrying me is that it occasionally peaks at 0.9 bar for a tiny fraction of a second (I know this because it logs peak values). It seems to happen when I come off boost suddenly right at the top of the rev-range - or if I accidentally hit the limiter.

So, is it a problem, and if so how do I cure it?

Also, what's happening mechanically to cause such a peak? The s/c doesn't compress any air, just pumps it at a constant rate (for a given rpm) into the inlet header. Even if I come off the throttle suddenly, surely the valves are still opening up at the same rate and releasing the pressure in the inlet manifold?

GReddy claimed 8.5 max psi as I recall, so 9.0 is close enough for me to assume it's just some measurement error.

[Gravel]

GReddy claimed 8.5 max psi as I recall, so 9.0 is close enough for me to assume it's just some measurement error.

No - not 9.0 psi - 0.9 BAR = 12.6 psi! As I said - this is only for the briefest moments but is it an engine killer?

[jlitman]

GReddy claimed 8.5 max psi as I recall, so 9.0 is close enough for me to assume it's just some measurement error.

No - not 9.0 psi - 0.9 BAR = 12.6 psi! As I said - this is only for the briefest moments but is it an engine killer?

Oh -- sorry, I misread! Um ... yeah ... I don't know why that would happen :confused: I think you're okay so long as you aren't getting detonation. Have you heard any pinging or knock?

[Gravel]

Oh -- sorry, I misread! Um ... yeah ... I don't know why that would happen :confused: I think you're okay so long as you aren't getting detonation. Have you heard any pinging or knock?

I don't really know that I would recognise it to be honest, and it is rather hard to hear anything over lift + the charger! The tuner did however say that it was knocking on the Greddy maps and that he had to retard by upto 5 degrees in places.

[Seven-Of-Nine]

I bet this sudden feel "Jerkiness" when you come off boost, is due to the drop in air pressure density as the TB closes, air to the SC is dramitically reduced hence that "feel". The Blitz SC was ass backwards to this had that farting noise which can be eliminted by having the Eaton bypass installed also a BOV to relieve pressure. Not too sure what can be done in the Greddy senario, just have to play around with some more tunning I guess.

[Gravel]

I bet this sudden feel "Jerkiness" when you come off boost, is due to the drop in air pressure density as the TB closes, air to the SC is dramitically reduced hence that "feel". The Blitz SC was ass backwards to this had that farting noise which can be eliminted by having the Eaton bypass installed also a BOV to relieve pressure. Not too sure what can be done in the Greddy senario, just have to play around with some more tunning I guess.

Cheers seven - I thought it might be something like that - as the TB slams shut, the s/c suddenly has no air input and becomes unloaded and so over-revvs. I can't see where you could add a BOV though - the only easy place would be the vac-line and that's way too small to vent much gas. I don't like the idea of boring a hole in that cast s/c manifold though...

[Seven-Of-Nine]

TBH I don't think a BOV will help you as its a different setup to the Blitz. If you keep the TB partuially "open" to allow gradual deceleration, I guess that would help, else you could fit a bypass just before the filter and weld it on just before the SC intake, just an theoretical idea. The BOV will only help with over boost ref the intake manifold, but I don't think that would be a problem due to mapping.

[Gravel]

TBH I don't think a BOV will help you as its a different setup to the Blitz. If you keep the TB partuially "open" to allow gradual deceleration, I guess that would help, else you could fit a bypass just before the filter and weld it on just before the SC intake, just an theoretical idea. The BOV will only help with over boost ref the intake manifold, but I don't think that would be a problem due to mapping.

Yeah, I guess I will have to be more gentle - it is a rare occurence but pretty much guaranteed if I hit the limiter by accident. The tuning seems spot on though - no flat spots at all across the entire rev range and a pretty constant A/F ratio as well - Whifbitz really know their stuff :)