AFR dropped to 10.1 (gas scale) under boost which can’t be possible. The motor usually drowns when it’s that rich. Not sure what is going on. Maybe O2 sensor is failing. My tuner says it’s either the E85 mix (I tested and it’s E85) or fuel pressure. When I get in front of my laptop again I’ll share my VE, AFR and Timing Tables.
Same wideband or new sensor? I had a similar issue. Had car setup for 11.3 afr. Used my wideband on another project. New wideband shows 10.0. Swapped sensors and I’m back at 11.3.
