datalogit & power fc 101 .... *56K*

[00silverGTS6spd]

Hopefully the people who know more about this will pop in here and answer some of the things I leave out.

NOTE: if you attempt to tune the car yourself and blow it up then it sux2bU! I better not see 1 person blaming me for thier own stupidity.I'm just posting what I know just to be nice and to try to get answers for the stuff I dont know. you should not try anything in here if you dont know what you are doing. Also this isnt a working map so dont try to copy the #'s thinking you'll make power :gap: cause I know someone would've tried it.


**This is just a start. I will show some logs and stuff later. (gotta start somewhere)**


Data logit opening screen...
http://www.ksbservices.com/datalogit/openingscreen.jpg

This is the first settings tab. There are 5 total but I dunno what the other ones do so I will not post pics of those tabs. (anyone who knows about those tabs feel free to fill me in.)

On this tab you can

1) set the rpm in which lift engages and disengages..

2) Set the rpm the car idles at

3) Set the knock warning thresh hold. MWR sets thiers at 60 which I think is way too high personally. I personally have mine at 40 and dont reccomend setting it higher then 50.

http://www.ksbservices.com/datalogit/generaltab.jpg


This is where you do all your fuel tuning.
**For all the maps the N letters across the top represents RPMS in increments of 500. the P letters going vertical represent the area the engine is referencing as you give it throttle.** (this will make more sense once you see a log)
http://www.ksbservices.com/datalogit/basemap.jpg


Here is the valve timing map.

**there is a lot of power to be made and lost here. but be VERY careful when messing around with this map cause you can send you engine into serious knockin and other very bad things**

http://www.ksbservices.com/datalogit/valvetiming.jpg

Here is the ignition map..

**there is a lot of power to be made and lost here. but be VERY careful when messing around with this map cause you can send you engine into serious knockin and other very bad things**

http://www.ksbservices.com/datalogit/ignition.jpg


thats all I've got time for ight now. I'll post more later.

[00silverGTS6spd]

things to know....

1) never tune without a dyno

2) dont try this if you lack common sense (feel free to double check with friends on this)

3) whether you think you need to or not CLEAN YOUR MAF before you tune.


Hopefully we can get Monkeywrench to hop in here and fill us in on some things.

My biggest question is the INJ map. I wanna know what the values represent since you can make power from manipulating it but I dont wanna mess with it blindly.


and no I'm not gonna get into specifics of how to tune your car since they all vary. I'm just setting up an overview. so I quit getting pms about this stuff. :rofl:

[DYI01]

Originally posted by 00silverGTS6spd
things to know....


My biggest question is the INJ map. I wanna know what the values represent since you can make power from manipulating it but I dont wanna mess with it blindly.




The INJ map is actually almost the same as the base map is. I dont even know why the INJ is even in the software. I think it is for "fine tuning" the base map, then you just hit the "recalc base" and the settings in the INJ map carry over to the Base map, and the INJ map goes back to all 1.000's. The 1.000 represents exactly what the base map is in that given point. changing it up or down will take the Base map and alter it some. Decreasing the value will lean out the mixture, and increasing the value will richen the mixture. Give it a whirl its not so bad:) Its about time someone took the time to make this.

[Smaay]

Actually the P line is engine load....lets say that you are at 35% throttle and you are accelerating. when you reach a certain point the engine tapers off and the load drops so the working area of the MAP will drop....Hope that makes any sence

[QTRMLR_1]

Smaay, what would be the best way to measure and record load while at the same time recording A/F ratios and RPMs. The PFC does have datalogging, but can it record load? However as far as I know the PFC cannot be hooked up directly to a wideband 02 sensor right? Or can load be recorded on a chasis dyno as well as the RPM and A/F ratio...all in one system at the shop? hmmmm...I was hoping to get away with a do it yourself method of using a wideband 02 which can datalog A/F, RPM, and throttle position (which isn't as good as load), and then use a gtech to measure relative gains/losses. But yes, I can see how a dyno is always best but most expensive. I really must stop talking to myself...haha.....just thinking out loud.

[DYI01]

Load can be logged in the FC-Edit. As it was stated Load is the *P* section down the left hand side of the map. The more load that is put on the engine the more the load will drop down the scale, along with the rpm *N*. You can purchase any 5v output wideband system, such as the FJO system with the NTK sensor and plug it in to the Datalogit box. And you and log the a/f as well. This would be best for tuning the a/f ratio everywhere, since part throttle is kinda hard to tune on the dyno. WOT should be tuned on the dyno since for the most part you are tuning for max power at WOT, and part throttle is mostly for fuel efficiency.

[QTRMLR_1]

Thanks...that was very helpful. Have you connected a wideband sensor to the datalogit box and recorded A/F data? Is the FJO system the best, and how does it stand in price compared to the other 5v output wideband systems? thanks...

[DYI01]

The FJO system is one of the better ones since it uses the NTK sensors, they were one of the original DIY WBo2 systems. Just make sure you get a system that uses the NTK sensor because the Datalogit is precalibrated for that sensor. If you want to use a different sensor you have to recalibrate it. Looking through how to calibrate it seems like a HUGE PITA. You have to do some crazy calculations and what not. IMO just get the FJO.

[QTRMLR_1]

^^ sure thing boss. :cool:
how did you know you have to do those calculations? I briefly looked at the PFC manual and I think it was all in Japanese. Do you know Japanese?

[DYI01]

You dont want to look at the PFC manual, you want to look at the Datalogit Manual. It comes on CD when you purchase the Datalogit System in a pretty big .pdf file. theres lots to read in that thing. If it wasnt made clear earlier, let me make this clear to those that dont know. The FC-Datalogit is not made by A'PEXi, it is 3rd party software and hardware.

Oh and I know a little Japanese.

[00silverGTS6spd]

basically :werd: to everything he said. WOT tuning on the street isnt bad just dont bother with checkin for gains. get the A/F to a nice reasonable level and then adjust it when you're on the dyno for max power.

for mine the a/f ratio stayed a nice str8 line, was safe and made good power.

[Liqquid]

Thanks for starting this guys lol...

I'm really wondering what the screenshot looks like when logging data, is there anyway you could post a screenshot of that?

I wanna use mine to log runs on the track, to see how things are running and what's changing due to weather and all that, also would be cool to cross referance the timeslips with the rpm shifted at... get an idea of what works best.

Is it a line graph screen or what does it have??

[DYI01]

Originally posted by 00silverGTS6spd
you want a g-tech. the datalogit doesnt work like that to my knowledge.

Yes it does. I will try and post a screen shot of it.

*edit*
http://www.we-todd-did-racing.com/wetoddimage.wtdr/wNTE2NzQyNnM0MTNkZmQzMXk1NDE%3D.jpg

This is the chart screen you can log multiple things at once time on the same graph.


http://www.we-todd-did-racing.com/wetoddimage.wtdr/wNTE2NzQzNnM0MTNkZmQzMXk1NDE%3D.jpg

This is the map watch screen, you can look specifically at what the car is doing at a certain RPM and load point. Both are very helpful in tuning.

With this you can do realtime playback of a log and watch it. you can quickly FF it or rewind it as well too. I actually just figured out exactly how to use these features a few weeks ago and have just been playing around with it.

[monkeywrench]

- you can datalog the 0-5v from a wideband. Just hook it up to the additional inputs on the datalogit, and convert the voltage to an a/f number later. The PFC has no provision for a wideband input so there's no autotune function.

- we tune with the base map and ignore the inj map. That's personal preference. INJ map is % change to the base map.

- you can't datalog load directly but you can log the airflow. You can also use the trace function to see which load cells the thing went through during a dyno pull.

[QTRMLR_1]

^^ so the airflow is a good indicator of load...and we can carry over the numbers to load in a direct linear relationship, right?...or not quite?....

[Boosted2.0]

Originally posted by QTRMLR_1
^^ so the airflow is a good indicator of load...and we can carry over the numbers to load in a direct linear relationship, right?...or not quite?....

It is the ultimate indicator of load as long as you take RPM into consideration yes.

[kaioshin]

Just as an FYI guys, I am going through and deleting any of the non-informative posts, just so it is easier to read.

Also, when taking a screenshot, you can use Alt + Printscreen. This is capture only the active window. This will help with image size and let you post without having to show the world your desktop. :chuckles:

[kaioshin]

Just adding this here to centralize info.

manual says 10min no load (stereo, ac, defroster), then 10 min just ac, then 10 min ac off, with defroster on.

If you think it's having idle problems you can cut power to the PFC via the circled fuse below.
http://www.newcelica.org/other/installs/tprcai/Fuse.jpg

[superman1240]

What happens if you dont have AC?

Mike

[QTRMLR_1]

wow you took your AC out? or you're just asking?

I thought about taking AC out, but I could still use that weight over the front tires until some other mods.

[superman1240]

i've had it off for like a year already dont miss it. its not really hot where i live so didnt us it.

but at first when i took it off and tried to turn the A/C on it would blink and then turn off. Now, my rpm's still go up a lil and it stays on so i hope i dont have problems with PFC.

Mike

[Yoda's Master]

anyone have replacement pics of the first 5 pics that arent being hosted anymore?

[Jesse IL]

I'll have to write a new one of these one of these days. I'd say those pics are probably gone. Plus, this writeup is somewhat bad.

[Yoda's Master]

I'll have to write a new one of these one of these days. I'd say those pics are probably gone. Plus, this writeup is somewhat bad.

sweet, i shall be waiting :D

[StEaLtHbLkZeRo]

I'll have to write a new one of these one of these days. I'd say those pics are probably gone. Plus, this writeup is somewhat bad.
werd....I'll be waiting on this. I will be purchasing my PFC soon and would like to tune afr and ign on the streets to cut down dyno time.

[ZBoyce]

Yes please do Jesse, i will be tuning soon.