Turn off LTFT

How do i disable my LTFT in my GTP? I am trying to turn off my LTFT so i can tune only on STFT to get my MAF dialed in but i dont know how to do it or if it can even be done. Is the best way to tune my MAF by following this thread http://www.hptuners.com/forum/showth...oop+maf+tuning

I was trying to follow this thread...
http://www.hptuners.com/forum/showthread.php?p=121096

Thanks.

As far as I know you can not disable LTFTs in these PCMs. But you could log LTFT + STFT. This should give you about the same results.

My experience is that LTFT alone work the best.

- Mat

So should I make a histogram of LTFT vs MAF and use that or should i log STFT vs MAF also and then add them together and use that to paste to my MAF vs Freq? I have my wideband i just have to hook it up so i can do AFR but im just trying to get MAF alittle closer before i do that.

I usually use a Histogram of LTFT vs. MAF. But you can also make a Histogram of LTFT + STFT vs. MAF.

You can do it on the car but it must be done with a laptop hooked up to the car. To do it go to VCM controls> Fuel & spark> Fuel trim learn "OFF". But that will only do it for that one time so you will need to reset that every time, also remember to reset the trims first.

Quote:

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Originally Posted by Phantom

You can do it on the car but it must be done with a laptop hooked up to the car. To do it go to VCM controls> Fuel & spark> Fuel trim learn "OFF". But that will only do it for that one time so you will need to reset that every time, also remember to reset the trims first.

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I may be wrong but as far as I know, this would disable STFTs too.