Originally Posted by
WeathermanShawn
If you log MAF Frequency (Hz) vs LTFT (Bank 1 or 2) or CALCLTFTBENS (See Tutorial) you can apply the MAF correction to eliminate those positive Trims.
Personally, on your ZO6, I would leave Spark alone (for now). Those are high-compression heads. You don't need more than 22-25 degrees of Total Spark Advance on those heads to make power (I run 22 degrees WOT-Summer).
You can safely do the Non-PE (see Tutorial) with just your Narrowbands and strict adherence to the Tutorial. I'll leave the bung decision to you and others. Technically, you probably can get away with just one bank for logging. The PCM may want both banks?
Get a wideband ASAP. WOT is where the fun is at. Tuning a nice AFR at WOT will probably do more for your performance than anything. Its probably really rich right now. There is probably 10-20 more HP just in nailing down that 12.7 AFR at WOT.
Later..