Controversy of WR race header

RaptorGTS · 11-19-2006, 07:11 AM

Does it, or does it not make any gains. I am not referring to mid-range or low-end gain, but top-end. I am asking of the 2.5" collector version by the way.

Celicasaur · 11-19-2006, 10:14 AM

This thread is sooooo gonna get obscured by ambiguity.

I'll tell you now what you probably already know.

Answer: Nobody knows because a proper independant dyno (monkeywrench racing aside) hasn't been conducted.

Seven-Of-Nine · 11-19-2006, 10:35 AM

Got one sitting here but I can't afford to get it modified at the moment. Ideally I need a true 2.5" flex joint and tube also 2 bosses for 2ndary O2 and wideband. Also the Primary flange could do with some porting as when you feel around inside is a lip there is a gap but that depends on how it alligns up with the engine and also flow benched. What I did notice when I ordered mine I was left with a 2.140" tubing Leo had his shop send me a bit of new piping and flange but still wasn't 2.5" which didn't inspire but i'm leaning more towards his dispatch which obviously doesn't check things. Also I don't understand why I have primary O2 sensor just on one of the primary pipes rather than on the collector side where by you would get a more true reading and temp from all 4 runners. Yes I think it has potensial but I dont think Leo's shop are doing a good job of sending out the right sized products I know a few of us have recieved the smaller size collector piping, needs more quality control and hands slapped shop side........ also customers compensated and sent correct parts. saying that the quality of the welds is perfect the header itsself is a work of art. With those mods done I do feel it should be ok and perform well. Have to admit I would like to do a before and after DYNO but am still jobless and getting skint whcih isn't helping. as i've got so many projects on hold.

TRlPPlN · 11-19-2006, 08:28 PM

man i wish i can do mine but i have to wait for smog. i cant afford to change to the race header back to stock for smog then back to the race header. i cant change my own stuff.

youngxlos · 11-19-2006, 09:40 PM

i am not sure if my dyno's where enough but when i got tuned. i gained 26.6 whp and 14.9 pounds of torque after tuning. my mods are
INJEN CAI, WR race header with 2.5 collector, Kazuma exhaust, power fc, rps clutch, and fidanza flywheel.

**Boosted2.0** · 11-19-2006, 10:06 PM

I think Youngxlos is the only one to do before and afters on it, and hsi top end and MPH results have not been as high as should be expected with his setup. He is only one example, but based on his I would say its not that great.

Klutch hadbefore and after as well, and he lost 4 HP versus ported header and cat but I'm not 100% sure if his is a 2.5" collector

Archer2KGTS · 11-19-2006, 11:37 PM

Klutch has a 2.25 collector.

Celicasaur · 11-20-2006, 04:56 AM

Would be interesting to see ported stock with 2.5piping from the start of the midpipe (where the two way thingy turns into one and piping is still quite fat) to the exel back with no cat. I wonder if that'll give higher gains than the race header...

hmm...maybe i should be the gineua pig... mind you, will the extra mm of extra bore over stock piping really make that much of a difference to justify me spending around $350 ?

Seven-Of-Nine · 11-20-2006, 06:24 AM

I'm leaning towards acutally having that flex joint completly cut off and just run straight flanged 2.5" tube with the bosses on. When look inside the race header you can see 3 / 4 different diameters the sodding 2.140" which should be 2.5" all through then another for the flange no velocity spacers to taper up, another for the flex pipe and finally another for the collecotr back bit. I rechen if that was fixed also bit of porting at the mounting flange it could yeild decent gains. Just feel that the hangers would be enough to take up movement rather than that crappy flex joint which with the 2.140" tube is hindering things greatly.

youngxlos · 11-20-2006, 06:42 AM

26.6 hp gains from bolts on is actually not bad. like boosted said the top end is not that great. i am only trapping 98 mph in the 1/4.
but 26.6 hp gains is what most rsx get from there bolts on so i guess thats ok, i would still want more power out of it, like 33 hp gains but i dunno.

Jesse IL · 11-20-2006, 07:22 AM

I've had trap speeds over 98mph on an unported stock header several times. Hell, I had over 98 mph trap speeds on a virtually stock car running Injen CAI, TRD eshaust and the stock tires.

With a Trial header and just an MWR base map, I was consistently over 99 mph.

**Boosted2.0** · 11-20-2006, 09:01 AM

Quote:

Originally Posted by Celicasaur

Would be interesting to see ported stock with 2.5piping from the start of the midpipe (where the two way thingy turns into one and piping is still quite fat) to the exel back with no cat. I wonder if that'll give higher gains than the race header...

hmm...maybe i should be the gineua pig... mind you, will the extra mm of extra bore over stock piping really make that much of a difference to justify me spending around $350 ?

we did that on swingfixers car - he picked up about 5HP up top just ditching the cat and resonator.

klutch · 11-20-2006, 04:05 PM

Quote:

Originally Posted by Boosted2.0

I think Youngxlos is the only one to do before and afters on it, and hsi top end and MPH results have not been as high as should be expected with his setup. He is only one example, but based on his I would say its not that great.

Klutch hadbefore and after as well, and he lost 4 HP versus ported header and cat but I'm not 100% sure if his is a 2.5" collector

actually at first i thought i lost that much, but i went back to the same dyno that i had dynoed with your header and i actually lost 9.

Seven-Of-Nine · 11-20-2006, 04:15 PM

Quote:

Originally Posted by klutch

actually at first i thought i lost that much, but i went back to the same dyno that i had dynoed with your header and i actually lost 9.

klutch just to confirm the -9 hp loss was on the WR header or Boosted2.0 header. Also ref the DYNO testing take it exactly the same equipment was used and exactly the same input variables. -9 loss on either one of those headers is just silly.

Celicasaur · 11-20-2006, 04:32 PM

Xlos....this 26 bhp...thats a LOT! was that from simply adding a pfc to your bolt ons?! and i take it that wasnt the peak power improvement, that was the best improvement somewhere in the band...?

klutch · 11-20-2006, 04:38 PM

sorry that i didnt clear that up, i re-read it.

but it was on the weapon r header. i lost 9 peak hp. it was the same place i dynoed with boosted's header was what i was trying to say. keep in mind that i did switch exhaust but its still a pretty good flowing exhaust(new=magnaflow 2.5, old=crushbent 2.15 with hks can)

Celicasaur · 11-20-2006, 04:46 PM

klutch, which header lost you power? it's still not 100% clear

"but it was on the weapon r header. i lost 9 peak hp."

the full stop makes it confusing...

BuRn1nG · 11-20-2006, 05:14 PM

he lost 9hp with the Weapon R Race header.

youngxlos · 11-20-2006, 05:48 PM

Quote:

Originally Posted by Celicasaur

Xlos....this 26 bhp...thats a LOT! was that from simply adding a pfc to your bolt ons?! and i take it that wasnt the peak power improvement, that was the best improvement somewhere in the band...?

yeah adding power fc and tuning. i mean like i said, wish i could of gain like 30 after tuning. but ether way the car does have 100k and i could be loosing compression. damn one of these days i have to check and see whats going on. like i said 26.6 whp is not bad. and i didnt see any drops anywhere on the powerband even on the baseline dyno

as you see here even on the baseline with no tuning there is no drops at all in the power band.

Celicasaur · 11-20-2006, 06:07 PM

Is that a mustang dyno?! surely must be to have had around 155hp (flywheel!!!) on the base run, then only 173 peak. You have some pretty impressive N/A mods there and should be way higher up. I'd expect your flywheel power to be way past 210, surely...

I'd look to get that compression test done, better still, a leakdown test. Mines done nearly 50k and on the last test (touch wood!) all of them are well below 5% so that's good for nitrous use and compression is good. Just baby the car when its cold out there...

krichards · 11-20-2006, 06:25 PM

the weapon R looks good

klutch · 11-20-2006, 06:50 PM

Quote:

Originally Posted by krichards

the weapon R looks good

if you want to lose power, than get it

klutch · 11-20-2006, 07:00 PM

they couldnt even figure out the hissing noise which a handful of member's had problams with. the two that i know i havnt heard problams with is young n dy01. but i think they dont hear it is because they got the kazuma, but if i am wrong, than sorry was just making a educated guess.

and yes the weapon r lost power

youngxlos · 11-20-2006, 07:24 PM

Quote:

Originally Posted by Celicasaur

Is that a mustang dyno?! surely must be to have had around 155hp (flywheel!!!) on the base run, then only 173 peak. You have some pretty impressive N/A mods there and should be way higher up. I'd expect your flywheel power to be way past 210, surely...

I'd look to get that compression test done, better still, a leakdown test. Mines done nearly 50k and on the last test (touch wood!) all of them are well below 5% so that's good for nitrous use and compression is good. Just baby the car when its cold out there...

by leakdown test do you mean to check if i have a leak on the exhaust system????

krichards · 11-20-2006, 07:35 PM

Quote:

Originally Posted by klutch

if you want to lose power, than get it

from youngxlos dyno graph I see gains across the enitire powerband, can you please point out where the loss is?

BuRn1nG · 11-20-2006, 07:36 PM

what a waste of $650. Now all you have is some shiny metal in your engine bay.

lets all admit to the fact that the stock header ported is the only way to go because noone has had any real gains in their shorty or race headers.

klutch · 11-20-2006, 07:47 PM

Quote:

Originally Posted by BuRn1nG

what a waste of $650. Now all you have is some shiny metal in your engine bay.

lets all admit to the fact that the stock header ported is the only way to go because noone has had any real gains in their shorty or race headers.

werd up! i actually wouldnt mind trying out the brashboy

i gained power in the midrange and low end, but it wasnt anything to WOW about. yes i could feel it and it showed on the graph. but where the power loss was is at the top end.

he gained

the dynograph your comparing to is way different setpup on my car. not everyone will have those exact mods. the mods i ahve is a aem intake the rh and magnaflow exhaust

**Blue Bomber** · 11-20-2006, 07:55 PM

Quote:

Originally Posted by youngxlos

Quote:

Originally Posted by Celicasaur

Is that a mustang dyno?! surely must be to have had around 155hp (flywheel!!!) on the base run, then only 173 peak. You have some pretty impressive N/A mods there and should be way higher up. I'd expect your flywheel power to be way past 210, surely...

I'd look to get that compression test done, better still, a leakdown test. Mines done nearly 50k and on the last test (touch wood!) all of them are well below 5% so that's good for nitrous use and compression is good. Just baby the car when its cold out there...

by leakdown test do you mean to check if i have a leak on the exhaust system????

It tests your valves and piston rings. Easier to pinpoint a leak since it uses extermal compressed air instead of cranking the engine to create pressure (compression test), which allows you to rotate the crank to test different parts. Noise from the intake manifold would indicate intake valve leakage, noise from the exhaust is from the exhaust valves, and air coming out of the dipstick tube would be your piston rings. Different pressure variations also will indicate similar problems.

**Boosted2.0** · 11-20-2006, 10:10 PM

Youngxlos - just to clarify on that dyno - the original numbers on it are the stock ECU or the Power FC numbers before tuning?

**Boosted2.0** · 11-20-2006, 10:13 PM

Quote:

Originally Posted by klutch

Quote:

Originally Posted by Boosted2.0

I think Youngxlos is the only one to do before and afters on it, and hsi top end and MPH results have not been as high as should be expected with his setup. He is only one example, but based on his I would say its not that great.

Klutch hadbefore and after as well, and he lost 4 HP versus ported header and cat but I'm not 100% sure if his is a 2.5" collector

actually at first i thought i lost that much, but i went back to the same dyno that i had dynoed with your header and i actually lost 9.

Wow - you make 9 HP less with teh Weapon R header than with the ported header and cat on the car - thats nuts. We tooke the cat off swingfixers car and he picked up an additional 5 HP, whch means we could possibly have made 14 HP more than the Weapon R header on your car with a catless midpipe and ported header. Thats just nuts.

**Boosted2.0** · 11-20-2006, 10:14 PM

After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all.

youngxlos · 11-20-2006, 10:53 PM

Quote:

Originally Posted by Boosted2.0

Youngxlos - just to clarify on that dyno - the original numbers on it are the stock ECU or the Power FC numbers before tuning?

the original numbers where with the stock Apexi map that came with the power fc.
so the gains are from tuning and of course the mods that i already had.

Quote:

Originally Posted by Boosted2.0

After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all.

i would love to do that, ill have to save up to get a down pipe though.
and my throttle body is going to be getting ported this month. so ill go get tuned see how much i gain from that, then do after dynos with your header. how does that sound???
look to me like we will have an answer by the end of the year. bare with me guys the cash is not going to be easy specially on holidays.

**Boosted2.0** · 11-20-2006, 10:59 PM

Quote:

Originally Posted by youngxlos

the original numbers where with the stock Apexi map that came with the power fc.
so the gains are from tuning and of course the mods that i already had.

Ahhhhh - that explains it - that map is crapola basemap material - it makes way less power than the stock ECU.

Quote:

Originally Posted by youngxlos

Quote:

Originally Posted by Boosted2.0

After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all.

i would love to do that, ill have to save up to get a down pipe though.
and my throttle body is going to be getting ported this month. so ill go get tuned see how much i gain from that, then do after dynos with your header. how does that sound???
look to me like we will have an answer by the end of the year. bare with me guys the cash is not going to be easy specially on holidays.

Sounds fine to me. Let me know if you think you'll want ceramic coating. I'll port the header for free, but the ceramic is on you if you want it.

youngxlos · 11-20-2006, 11:59 PM

nah don't really need it. now how would i go about the down pipe??? the stock pipe seems really really thick then it goes to 2.25 after the cat.

that looks like 3inch after the header then it steps down to like 2.5 then 2.25 after the cat. what do you guys think i should do???

kortik · 11-21-2006, 02:17 AM

wow
I am tracking this thread for sure

Seven-Of-Nine · 11-21-2006, 03:07 AM

Quote:

Originally Posted by youngxlos

that looks like 3inch after the header then it steps down to like 2.5 then 2.25 after the cat. what do you guys think i should do???

They have done that to maintain max flow without too disturbance or side runners blowing from a side angle onto one another that large diameter is needed, but they could use a tapered velocity section to go from that large diameter to 2.5" then decat. 2.5" though system.
^^^^^^^^^^ ref:- Stock header

----------------------------------------------------
Ref WR Header:-
I honnistly don't know what to do about this header now... kinda wish I never bought it........... knew I should have gone with the piper cams.........
But i'm still kinda optimistic that something could be done to adapt it, but need to work out cost of modifying if its worth it or not. That crappy flex joint and 2.140" pipe is defanatly on its way out into the bin. Also bit of porting on the engine to header flange cus of the lip. Ref that hissing exeryone is experienceing I bet its either that flex joint or somewhere around the areas where the runners are spliced and "welded" together. Reason I say this cus when I look in from the frontside to where they collect in the middle, might just be me but I can't actually see any welds there in certain sections, i'll have a better look later. Tempted to plug the runners and the outlet with rags and fill the system with air see if there are any leeks.
So what options have we got then for those of us with this header from reading this thread thou have to admit not alot whcih doesn't inspire.............

youngxlos · 11-21-2006, 06:58 AM

^^^ i am telling everyone the hissing sound is not a leak. everyone gets that when they get after market headers. my friends rsx hiss is louder and he has the ssr header. your telling me ssr sucks at making headers and they leak out??? and i have took the header out 2 times and didn't find any signs of leaks. no black spots anywhere in the header. i actually did had a leak on the kazuma exhaust but not the header.

do you see any signs of leaks??? i don't see no black exhaust spots

Seven-Of-Nine · 11-21-2006, 07:11 AM

Quote:

Originally Posted by youngxlos

do you see any signs of leaks??? i don't see no black exhaust spots

No cus I havn't installed it yet just going by other comments and suggesting possible areas where it could leak. But since what you are saying from your own experience is true then obviously no leak, kinda puts a lid on that, in that case there is just the faulse pretense the WR header gives you when the exhaust gasses are going through. As you said sounding like a leak but not actually a leak. I'm gonna test anyway before any modifications are done just be safe.
----------------------------------------
Just a wondering is there a member on here called Dan not too sure on his screen name who took his car to MIR drag strip had WR header - AEM CAI - PFC - Kamazuma etc. was getting earily 14's 14.5 14.1 14.02 on the strip think it was this year june or may ? Kinda wondering what his thoughts and any more DYNO with the WR header. 1st race was against a red 350Z then other cars over the day.

youngxlos · 11-21-2006, 07:23 AM

http://videos.streetfire.net/search/...cbb161608f.htm
this is the video your talking about.
me and DAN are getting pretty much equal times. his best time was 14 flat. and mine was 14.1 the only mod he has that i don't is the ported TB

Seven-Of-Nine · 11-21-2006, 07:38 AM

yes yes thats the vid, youngxlos has he got any DYNO printouts for this WR header as well ?

**Boosted2.0** · 11-21-2006, 07:50 AM

Quote:

Originally Posted by youngxlos

nah don't really need it. now how would i go about the down pipe??? the stock pipe seems really really thick then it goes to 2.25 after the cat.

that looks like 3inch after the header then it steps down to like 2.5 then 2.25 after the cat. what do you guys think i should do???

Cut it behind the front O2, and then weld on a 2.5" straight pipe back to the flange for your Kazuuma

youngxlos · 11-21-2006, 09:11 AM

Quote:

Originally Posted by Seven-Of-Nine

yes yes thats the vid, youngxlos has he got any DYNO printouts for this WR header as well ?

i am not sure. last time i heard from him, the shop where he gets tuned faked out on him. so he didn't get tuning.

boosted i don't want to cut up my stock piping. thats why i was going to get downpipe

Sylver1 · 11-21-2006, 10:39 AM

^Without that stock section you are going to loose power, if you dont want to cut your mid pipe maybe you could find one in a junk yard.

Boosted, what do you think would happen if you took the WR header and cut it right after the merge into 2 and shorten the 2 last pipes and use a better collector with no flexpipe?
Do you think that would help the top end?

Celicasaur · 11-21-2006, 11:52 AM

Quote:

Originally Posted by Boosted2.0

After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all.

Or you could wait for me to dyno at the end of next month

**Boosted2.0** · 11-21-2006, 12:04 PM

Quote:

Originally Posted by Sylver1

^Without that stock section you are going to loose power, if you dont want to cut your mid pipe maybe you could find one in a junk yard.

Boosted, what do you think would happen if you took the WR header and cut it right after the merge into 2 and shorten the 2 last pipes and use a better collector with no flexpipe?
Do you think that would help the top end?

hard to say - we don't know if the problem is the collector or their pipe lengths.

Quote:

Originally Posted by Celicasaur

Quote:

Originally Posted by Boosted2.0

After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all.

Or you could wait for me to dyno at the end of next month

I meant it will answer the question of whether the Weapon R looses power and if so how much. I already know you're going to make more power than stock with a ported header and decat silly.

Celicasaur · 11-21-2006, 01:13 PM

Quote:

Originally Posted by Boosted2.0

I already know you're going to make more power than stock with a ported header and decat silly.

Me too

Redliner9k · 11-21-2006, 06:12 PM

Quote:

Originally Posted by BuRn1nG

what a waste of $650. Now all you have is some shiny metal in your engine bay.

lets all admit to the fact that the stock header ported is the only way to go because noone has had any real gains in their shorty or race headers.

I beg to differ.... I will be revealing the results to my Race Header very soon, but Klutch and Boosted have seen the preliminary dynoes and it's showing ALOT of promise.

BuRn1nG · 11-21-2006, 07:13 PM

Quote:

Originally Posted by Redliner9k

I beg to differ.... I will be revealing the results to my Race Header very soon, but Klutch and Boosted have seen the preliminary dynoes and it's showing ALOT of promise.

ok, i will be looking forward to the before and after dyno

silver21 · 11-21-2006, 07:15 PM

thats what I like to ****in hear!!! got me excited!!

klutch · 11-21-2006, 07:29 PM

i would stay away from anything weapon r after my pass expierence. if ya look on the clubrsx boards, their also losing top end power with their race header. so go figure.

weapon r=weapon r, always and forever. new management means nothing.

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11-19-2006, 07:11 AM	#1
RaptorGTS GTS 6spd Join Date: Nov 2004 Location: Roswell, NM USA Posts: 584 iTrader: (11)	Controversy of WR race header Does it, or does it not make any gains. I am not referring to mid-range or low-end gain, but top-end. I am asking of the 2.5" collector version by the way. __________________ {RaptorGTS} 2000 Silver Celica GTS 6speed ::TRD Kazuma::AEM CAI:: ::TRD Action Package::S2000 Antenna::Black-Housing Headlamps::

11-19-2006, 10:14 AM	#2
Celicasaur Fully built N/A 2zz GT-S Join Date: Feb 2006 Location: London Posts: 3,793 iTrader: (19)	This thread is sooooo gonna get obscured by ambiguity. I'll tell you now what you probably already know. Answer: Nobody knows because a proper independant dyno (monkeywrench racing aside) hasn't been conducted. __________________ Need Denso 440cc injectors for your N/A beast? I'm your man. Celicasaur wishlist for 2010: My Power FC back from Apexi...again! + Boosted2.0 Race IM + Q45 + 4.8:1 Final drive gear + UR crank pulley + Redliner9k header Goals for 2010: 225whp N/A - 400whp with nitrous

11-19-2006, 10:35 AM	#3
Seven-Of-Nine 190 VVTLI (GTS) Join Date: Feb 2003 Location: England U.K. Posts: 1,509 iTrader: (9)	Got one sitting here but I can't afford to get it modified at the moment. Ideally I need a true 2.5" flex joint and tube also 2 bosses for 2ndary O2 and wideband. Also the Primary flange could do with some porting as when you feel around inside is a lip there is a gap but that depends on how it alligns up with the engine and also flow benched. What I did notice when I ordered mine I was left with a 2.140" tubing Leo had his shop send me a bit of new piping and flange but still wasn't 2.5" which didn't inspire but i'm leaning more towards his dispatch which obviously doesn't check things. Also I don't understand why I have primary O2 sensor just on one of the primary pipes rather than on the collector side where by you would get a more true reading and temp from all 4 runners. Yes I think it has potensial but I dont think Leo's shop are doing a good job of sending out the right sized products I know a few of us have recieved the smaller size collector piping, needs more quality control and hands slapped shop side........ also customers compensated and sent correct parts. saying that the quality of the welds is perfect the header itsself is a work of art. With those mods done I do feel it should be ok and perform well. Have to admit I would like to do a before and after DYNO but am still jobless and getting skint whcih isn't helping. as i've got so many projects on hold. __________________ http://www.pro-xdesign.50megs.com If you want something done properally do it yourself

11-19-2006, 08:28 PM	#4
TRlPPlN im a looser Join Date: May 2001 Location: Bay Area, Cali. Posts: 6,010 iTrader: (18)	man i wish i can do mine but i have to wait for smog. i cant afford to change to the race header back to stock for smog then back to the race header. i cant change my own stuff. __________________

11-19-2006, 09:40 PM	#5
youngxlos Lift!!!!!!!!!!!!!!!! Join Date: Mar 2004 Location: Lorton, Virginia Posts: 5,472 iTrader: (35)	i am not sure if my dyno's where enough but when i got tuned. i gained 26.6 whp and 14.9 pounds of torque after tuning. my mods are INJEN CAI, WR race header with 2.5 collector, Kazuma exhaust, power fc, rps clutch, and fidanza flywheel. __________________ Built 2zz-ge T....V2.1 in the works

11-19-2006, 10:06 PM	#6
Boosted2.0 Moderator Join Date: Oct 2003 Location: Houston, TX Posts: 13,058 iTrader: (14)	I think Youngxlos is the only one to do before and afters on it, and hsi top end and MPH results have not been as high as should be expected with his setup. He is only one example, but based on his I would say its not that great. Klutch hadbefore and after as well, and he lost 4 HP versus ported header and cat but I'm not 100% sure if his is a 2.5" collector __________________ Now offering: 2ZZ Performance Intake Manifold \| 2ZZ Ported Headers \| 2ZZ Ported Cylinder Heads \| PowerFC Harnesses for DBW and Auto 2ZZ \| MR2 Spyder 2ZZ Swap Kits \| Engine Builds \| Turbo / Supercharger installation \| Tuning

11-19-2006, 11:37 PM	#7
Archer2KGTS Now 100% More Retired Join Date: May 2004 Location: Tucson, Arizona / Detroit Lakes, Minnesota Posts: 2,345 iTrader: (20)	Klutch has a 2.25 collector. __________________ ZX10R > ZX6R > Walking > Celica

11-20-2006, 04:56 AM	#8
Celicasaur Fully built N/A 2zz GT-S Join Date: Feb 2006 Location: London Posts: 3,793 iTrader: (19)	Would be interesting to see ported stock with 2.5piping from the start of the midpipe (where the two way thingy turns into one and piping is still quite fat) to the exel back with no cat. I wonder if that'll give higher gains than the race header... hmm...maybe i should be the gineua pig... mind you, will the extra mm of extra bore over stock piping really make that much of a difference to justify me spending around $350 ? __________________ Need Denso 440cc injectors for your N/A beast? I'm your man. Celicasaur wishlist for 2010: My Power FC back from Apexi...again! + Boosted2.0 Race IM + Q45 + 4.8:1 Final drive gear + UR crank pulley + Redliner9k header Goals for 2010: 225whp N/A - 400whp with nitrous

11-20-2006, 06:24 AM	#9
Seven-Of-Nine 190 VVTLI (GTS) Join Date: Feb 2003 Location: England U.K. Posts: 1,509 iTrader: (9)	I'm leaning towards acutally having that flex joint completly cut off and just run straight flanged 2.5" tube with the bosses on. When look inside the race header you can see 3 / 4 different diameters the sodding 2.140" which should be 2.5" all through then another for the flange no velocity spacers to taper up, another for the flex pipe and finally another for the collecotr back bit. I rechen if that was fixed also bit of porting at the mounting flange it could yeild decent gains. Just feel that the hangers would be enough to take up movement rather than that crappy flex joint which with the 2.140" tube is hindering things greatly. __________________ http://www.pro-xdesign.50megs.com If you want something done properally do it yourself

11-20-2006, 06:42 AM	#10
youngxlos Lift!!!!!!!!!!!!!!!! Join Date: Mar 2004 Location: Lorton, Virginia Posts: 5,472 iTrader: (35)	26.6 hp gains from bolts on is actually not bad. like boosted said the top end is not that great. i am only trapping 98 mph in the 1/4. but 26.6 hp gains is what most rsx get from there bolts on so i guess thats ok, i would still want more power out of it, like 33 hp gains but i dunno. __________________ Built 2zz-ge T....V2.1 in the works

11-20-2006, 07:22 AM	#11
Jesse IL GT2871R Inside Join Date: Jul 2000 Location: Washington, DC Posts: 17,993 iTrader: (11)	I've had trap speeds over 98mph on an unported stock header several times. Hell, I had over 98 mph trap speeds on a virtually stock car running Injen CAI, TRD eshaust and the stock tires. With a Trial header and just an MWR base map, I was consistently over 99 mph. __________________

11-20-2006, 04:32 PM	#15
Celicasaur Fully built N/A 2zz GT-S Join Date: Feb 2006 Location: London Posts: 3,793 iTrader: (19)	Xlos....this 26 bhp...thats a LOT! was that from simply adding a pfc to your bolt ons?! and i take it that wasnt the peak power improvement, that was the best improvement somewhere in the band...? __________________ Need Denso 440cc injectors for your N/A beast? I'm your man. Celicasaur wishlist for 2010: My Power FC back from Apexi...again! + Boosted2.0 Race IM + Q45 + 4.8:1 Final drive gear + UR crank pulley + Redliner9k header Goals for 2010: 225whp N/A - 400whp with nitrous

11-20-2006, 04:38 PM	#16
klutch Registered User Join Date: Jul 2004 Location: dallas,texas Posts: 2,199 iTrader: (19)	sorry that i didnt clear that up, i re-read it. but it was on the weapon r header. i lost 9 peak hp. it was the same place i dynoed with boosted's header was what i was trying to say. keep in mind that i did switch exhaust but its still a pretty good flowing exhaust(new=magnaflow 2.5, old=crushbent 2.15 with hks can)

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11-20-2006, 04:46 PM	#17
Celicasaur Fully built N/A 2zz GT-S Join Date: Feb 2006 Location: London Posts: 3,793 iTrader: (19)	klutch, which header lost you power? it's still not 100% clear "but it was on the weapon r header. i lost 9 peak hp." the full stop makes it confusing... __________________ Need Denso 440cc injectors for your N/A beast? I'm your man. Celicasaur wishlist for 2010: My Power FC back from Apexi...again! + Boosted2.0 Race IM + Q45 + 4.8:1 Final drive gear + UR crank pulley + Redliner9k header Goals for 2010: 225whp N/A - 400whp with nitrous

11-20-2006, 05:14 PM	#18
BuRn1nG Shift Join Date: Oct 2005 Location: Charlotte, NC Posts: 1,235 iTrader: (0)	he lost 9hp with the Weapon R Race header. __________________ 2000 Black Toyota Celica GTS 6SP - Sold 2008 Carbon Silver 350z 6SP - Wrecked :( 2004 Green Mazda RX-8 GT 6SP - Current

11-20-2006, 06:07 PM	#20
Celicasaur Fully built N/A 2zz GT-S Join Date: Feb 2006 Location: London Posts: 3,793 iTrader: (19)	Is that a mustang dyno?! surely must be to have had around 155hp (flywheel!!!) on the base run, then only 173 peak. You have some pretty impressive N/A mods there and should be way higher up. I'd expect your flywheel power to be way past 210, surely... I'd look to get that compression test done, better still, a leakdown test. Mines done nearly 50k and on the last test (touch wood!) all of them are well below 5% so that's good for nitrous use and compression is good. Just baby the car when its cold out there... __________________ Need Denso 440cc injectors for your N/A beast? I'm your man. Celicasaur wishlist for 2010: My Power FC back from Apexi...again! + Boosted2.0 Race IM + Q45 + 4.8:1 Final drive gear + UR crank pulley + Redliner9k header Goals for 2010: 225whp N/A - 400whp with nitrous

11-20-2006, 06:25 PM	#21
krichards I love my Celica Join Date: Aug 2004 Location: Kingston, Jamaica Posts: 240 iTrader: (0)	the weapon R looks good __________________ WHENEVER YOU SHIFT KEEP IT IN LIFT

11-20-2006, 07:00 PM	#23
klutch Registered User Join Date: Jul 2004 Location: dallas,texas Posts: 2,199 iTrader: (19)	they couldnt even figure out the hissing noise which a handful of member's had problams with. the two that i know i havnt heard problams with is young n dy01. but i think they dont hear it is because they got the kazuma, but if i am wrong, than sorry was just making a educated guess. and yes the weapon r lost power

11-20-2006, 07:36 PM	#26
BuRn1nG Shift Join Date: Oct 2005 Location: Charlotte, NC Posts: 1,235 iTrader: (0)	what a waste of $650. Now all you have is some shiny metal in your engine bay. lets all admit to the fact that the stock header ported is the only way to go because noone has had any real gains in their shorty or race headers. __________________ 2000 Black Toyota Celica GTS 6SP - Sold 2008 Carbon Silver 350z 6SP - Wrecked :( 2004 Green Mazda RX-8 GT 6SP - Current

11-20-2006, 10:10 PM	#29
Boosted2.0 Moderator Join Date: Oct 2003 Location: Houston, TX Posts: 13,058 iTrader: (14)	Youngxlos - just to clarify on that dyno - the original numbers on it are the stock ECU or the Power FC numbers before tuning? __________________ Now offering: 2ZZ Performance Intake Manifold \| 2ZZ Ported Headers \| 2ZZ Ported Cylinder Heads \| PowerFC Harnesses for DBW and Auto 2ZZ \| MR2 Spyder 2ZZ Swap Kits \| Engine Builds \| Turbo / Supercharger installation \| Tuning

11-20-2006, 10:14 PM	#31
Boosted2.0 Moderator Join Date: Oct 2003 Location: Houston, TX Posts: 13,058 iTrader: (14)	After thanksgiving I will port a stocker and send it to Youngxlos. If he picks up some power with that and a decat then it will answer this question once and for all. __________________ Now offering: 2ZZ Performance Intake Manifold \| 2ZZ Ported Headers \| 2ZZ Ported Cylinder Heads \| PowerFC Harnesses for DBW and Auto 2ZZ \| MR2 Spyder 2ZZ Swap Kits \| Engine Builds \| Turbo / Supercharger installation \| Tuning

11-20-2006, 11:59 PM	#34
youngxlos Lift!!!!!!!!!!!!!!!! Join Date: Mar 2004 Location: Lorton, Virginia Posts: 5,472 iTrader: (35)	nah don't really need it. now how would i go about the down pipe??? the stock pipe seems really really thick then it goes to 2.25 after the cat. that looks like 3inch after the header then it steps down to like 2.5 then 2.25 after the cat. what do you guys think i should do??? __________________ Built 2zz-ge T....V2.1 in the works

11-21-2006, 02:17 AM	#35
kortik Registered User Join Date: Nov 2004 Location: Seattle,WA Posts: 2,658 iTrader: (2)	wow I am tracking this thread for sure __________________ 05 Matrix XRS Indigo Ink Pearl Progress RSB, TRD STB, Custom Borla 2.5" Exhaust, PPE header, Tein SS, TWM SS, Injen CAI, JDM helical LSD from spyder, RPS Max/Street, C-One Type R Flywheel, ES Motor Mounts, 18" Volks GT-S, HYDRA EMS

11-21-2006, 06:58 AM	#37
youngxlos Lift!!!!!!!!!!!!!!!! Join Date: Mar 2004 Location: Lorton, Virginia Posts: 5,472 iTrader: (35)	^^^ i am telling everyone the hissing sound is not a leak. everyone gets that when they get after market headers. my friends rsx hiss is louder and he has the ssr header. your telling me ssr sucks at making headers and they leak out??? and i have took the header out 2 times and didn't find any signs of leaks. no black spots anywhere in the header. i actually did had a leak on the kazuma exhaust but not the header. do you see any signs of leaks??? i don't see no black exhaust spots __________________ Built 2zz-ge T....V2.1 in the works

11-21-2006, 07:23 AM	#39
youngxlos Lift!!!!!!!!!!!!!!!! Join Date: Mar 2004 Location: Lorton, Virginia Posts: 5,472 iTrader: (35)	http://videos.streetfire.net/search/...cbb161608f.htm this is the video your talking about. me and DAN are getting pretty much equal times. his best time was 14 flat. and mine was 14.1 the only mod he has that i don't is the ported TB __________________ Built 2zz-ge T....V2.1 in the works

11-21-2006, 07:38 AM	#40
Seven-Of-Nine 190 VVTLI (GTS) Join Date: Feb 2003 Location: England U.K. Posts: 1,509 iTrader: (9)	yes yes thats the vid, youngxlos has he got any DYNO printouts for this WR header as well ? __________________ http://www.pro-xdesign.50megs.com If you want something done properally do it yourself

11-21-2006, 10:39 AM	#43
Sylver1 celica fan Join Date: May 2005 Location: Des Plaines, IL Posts: 815 iTrader: (7)	^Without that stock section you are going to loose power, if you dont want to cut your mid pipe maybe you could find one in a junk yard. Boosted, what do you think would happen if you took the WR header and cut it right after the merge into 2 and shorten the 2 last pipes and use a better collector with no flexpipe? Do you think that would help the top end? __________________

11-21-2006, 07:15 PM	#49
silver21 I FastR Join Date: Dec 2004 Location: Florence, Ky Posts: 2,971 iTrader: (2)	thats what I like to ****in hear!!! got me excited!! __________________ 2002 Jetta 1.8T (sold) 2001 Celica GTS 14.3@97 (Sold)

11-21-2006, 07:29 PM	#50
klutch Registered User Join Date: Jul 2004 Location: dallas,texas Posts: 2,199 iTrader: (19)	i would stay away from anything weapon r after my pass expierence. if ya look on the clubrsx boards, their also losing top end power with their race header. so go figure. weapon r=weapon r, always and forever. new management means nothing.

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