Is this normal in the OFT??

[benlaz88]

While having my OFT plug in, I see my LTFT is running really high (8-10%). When i start to accelerate, the LTFT drop however, when i just let go my throttler and let my car roll, LTFT automatic go back to 8-10%. Is the normal at all? Also, i should mention, I had my new JDL header/Overpipe install past week and with the aftermarket test pipe, catback, and intake. Any thought or opinion would be awesome.

Thanks

[JB86'd]

Intake probly causing that..look up MAF scaling

[Malt]

Originally Posted by benlaz88

While having my OFT plug in, I see my LTFT is running really high (8-10%). When i start to accelerate, the LTFT drop however, when i just let go my throttler and let my car roll, LTFT automatic go back to 8-10%. Is the normal at all? Also, i should mention, I had my new JDL header/Overpipe install past week and with the aftermarket test pipe, catback, and intake. Any thought or opinion would be awesome.

Thanks

I have the same issue at extremely light throttle. Scaling the MAF might correct it to some degree but if the closed loop fueling isn't tuned for your mods you won't get it "perfect".

[fantah]

Have to MAF scale for your Intake. Do you have after market ones? OFT OTS tunes are designed for Drop-in / stock filter, if you've changed the intake the MAF have to be adjusted for the new intake.

[steve99]

see here for maf scaling its nothing to do with oft. OFT tunes are done for stock intakes, if you change your intake you will need to rescale your maf for best results if you have perrin or takeda intaake their are some pre done scales at end og post above.

for best results individual maf scaling is best.

http://www.ft86club.com/forums/showthread.php?t=64790