Hi all,

I have a 2023 F-Pace SVR running VAP stage 3 and Mina Gallery intake cones. I've been trying to figure out why my LTFT are consistently ranging from 20-30% when at idle. As soon as I give it a little gas, they calm down to the 5-10% range.

Could this be a vacuum leak?

Things I've tried:
Cleaning the MAF sensors
Sprayed MAF cleaner all around the intake pipes while monitoring the STFT and saw no change.

Looking for any pointers to help me diagnose and fix the issue.

Thanks,
Dan

 

Classic air leak.
Cleaning MAF not going to help.

Sounds like need to spray elsewhere for the leak.

Or... it's the nonstandard stuff. Was it OK when first installed?

 

yeah, ran fine for a year or so with exact same mods. I just went through old logs and fuel trims were 0-5% So definitely sprung a leak i think. I think I'll take it to a shop to have a smoke test done.

The only other thing I can maybe think is that I ran Boostane in nearly every gas tank for a year. Not realizing it's no good for cats and O2 sensors. Could it be possible I fouled up the O2 sensors? My only thought here is that I think it would show issues even under acceleration, and it seems to only be an issue during idle.

 

Maybe but sounds unlikely.