MAF Scaling - Open/Closed Loop Fueling info

[steve99]

Originally Posted by Spuds

Hey folks. Followed the instructions in the first post to scale my MAF as I was seeing LTFT of +5 to +10. The vgi scaling program worked great for closed loop. Though it resulted in a slightly bumpy scale, my LTFT was down to +-3%.

Open loop scaling, on the other hand was quite wavy, and the transition showed the 3V lump folks were talking about back on page 8 of this thread. I cant seem to follow the logic/conversation and stopped trying a few pages in, but it seemed like it involved having to first get the injectors set correctly?

I know it was discussed in a number of threads back in 2014-ish, but if anyone could explain the consensus reached about why this happens and if I should/how I can get the scaling on the upper end right, I would very much appreciate it.

Just FYI: Stock engine, OFT, and Perrin inlet tube (because sound generator was annoying) in case that matters.

Don't worry about rescaling pi/di unless you have changed injectors




You will often get a bump around 3v as that's the cl to ol transition. just manually smooth that area. Then recheck the ol fueling

[Spuds]

Thanks steve99. Mind taking a look at what I have right now?

Below are the adjustments the application wants me to make from open loop logs. This is after I've re-scaled and smoothed in open loop and closed loop. The current MAF in the 3-3.5 region already shows a bit of a dip in the graph (hard to see in the picture). Also attached the %difference of my current scale (From Kodename47's tool).

Any thoughts or recommendations? It looks weird to me that it is so bumpy, but it could just be resonance, etc. Im thinking I might use one of the smoothed outputs from Kodenames tool and leave it at that.

[steve99]

Yes definitly smooth out the lumpy bits

[allowe]

I can't seem to figure out how to get the trims needed for data logging


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[steve99]

Try updating oft to pick up new template file, if that doesnt work manually update template file from here

http://www.ft86club.com/forums/showp...79&postcount=2

[allowe]

Originally Posted by steve99

Try updating oft to pick up new template file, if that doesnt work manually update template file from here

http://www.ft86club.com/forums/showp...79&postcount=2

Updating happens when you open up openflash manager with oft plugged in right?


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[allowe]

Nevermind just did it manually thank u!!

Edit @steve99 it still displays nothing even after manual update.
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[steve99]

Originally Posted by allowe

Nevermind just did it manually thank u!!

Edit @steve99 it still displays nothing even after manual update.
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Is it just that screen of parameters ? What avout other screens of parameters

What shows up in the log files ?

Looks like you need to talk to oft guys

[allowe]

Originally Posted by steve99

Is it just that screen of parameters ? What avout other screens of parameters

What shows up in the log files ?

Looks like you need to talk to oft guys

It shows column 1 , 2 ,3 etc


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[steve99]

Originally Posted by allowe

It shows column 1 , 2 ,3 etc


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Yeah sounds like you need to talk to oft guys something not correct their

[allowe]

Originally Posted by steve99

Yeah sounds like you need to talk to oft guys something not correct their

Wouldn't I know which data is which by just getting the names from a picture that has the names for those tables? The pids still fluctuate and give a reading


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[steve99]

Originally Posted by allowe

Wouldn't I know which data is which by just getting the names from a picture that has the names for those tables? The pids still fluctuate and give a reading


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could be possible if you can work out what they are

[allowe]

Originally Posted by allowe

I can't seem to figure out how to get the trims needed for data logging


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If anyone encounters this problem, i linked the file that worked for me that i got from Shiv. hope this could help someone out there!

GT86 Customized 8.zip

[allowe]

What else should I select? This could help those who have the oft




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