I have an issue with a 408ci I'm trying to dial in, if I switch over to MAF only the engine misfires.
If I tune only the VE I don't get any misfire?
I'm trying to get my lower rpm fine tuned with the o2's so the attached logs don't have the wide band connected.
The 2 tune files only have minor differences other than one is for tuning MAF and the other is for VE.
The MAF sensor is new, replaced about a week ago.
What would cause the MAF tune to misfire?
04 2500 408 maf tuning with o2.hpt
maf_02_5-20-2018.hpl
04 2500 408 ve tuning with 02_2.hpt
ve_02_rev2_5-20-2018.hpl