Create a histogram that logs LTFT vs. MAF Hz. This will tell you what percentage your MAF Hz are off at idle and cruising speeds. When you go into PE mode, it will command an AFR and calculate how much fuel to add based on that AFR and what the MAF settings are. For now, you can adjust your commanded afr in PE mode down to a lower number and get your O2's up to around 930-940, but you will be able to tune it much better once you get your wideband in. Once you have the wideband, then set up a histogram that logs AFR error % against MAF Hz to tune the upper range of your MAF. Once I got my MAF table tuned in top to bottom, I set my commanded AFR in PE to 11.3 for E10 and zeroed out my PE add vs. rpm vs. time table. I am still fine tuning things a little bit, and bringing up my WOT timing, but I am knock free and it's running strong.
