Guys, hoping someone can provide some advice on this.
I've got a weird spike in my AFR at 3.2v between 3000-4000rpm where it runs a few points too lean.
The car has a OFT, OFH and a Takeda intake and is running Wayno's v86 tune on United E85.
Log 1: This when I first noticed it. It went up to 14.36 AFR when command was 12.59.
http://datazap.me/u/drift86/e85-stag...zoom=1956-2013
Log 2: I then added 10% to the 3.2v MAF value. It dropped to 13.78 AFR when command was 12.59. Still too lean but heading in the right direction.
http://datazap.me/u/drift86/uel-e85-...2&zoom=488-536
Log 3: I added another 8% to the 3.2v MAF value. AFR went back up to 14.24 when command was 12.59. Not what I was expecting.
http://datazap.me/u/drift86/uel-e85-...2&zoom=158-236
I didn't want to keep increasing this as it seems something else is off. Any ideas? Could I have a faulty MAF sensor?