Sorry Joe, missed your reply. Yes my fault on the reverse coil wiring bank 2. No more popping. After 5 years I guess I was just too excited hearing it fire off right away to realize it really wasn't running smoothly.
Figured out the YELLOW gas was what the 93 octane here looks like.
Now part 2...
LTFT still at 25%. STFT ~10-12%. Working on the phone with my tuner and emailing logs and tunes, a lightbulb went off in his head. Trims adding 30-35% and my LS3 injectors being 30-35% larger than LS1, he sent a me a tune with LS1 injector data. Loaded and immediately change to trims. Much closer to zero. But why?
He feels the air the MAF is reporting makes sense and commanded afr is 14.63. I've went over this thing multiple times for unmetered air. Can't find any.
1 - MAF sensor reading incorrectly? bought used
2 - O2 sensors reading incorrectly? both new with first start
edit:
Been reading stickies...Could I follow this procedure to disable MAF and see what trims do?
Would the results tell me if my MAF is reading correctly or not?
A. C2901: MAF High Frequency Fail 1: Change to 1 Hz
B. C2903: MAF High Frequency Fail Limit: Change to 1
C. Copy B5913 High-Octane Spark to B5914 Low-Octane Spark
D. Insure MAF Sensor Circuit is displayed as a current DTC
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