Sorry, Mark. Didn't mean to leave you hanging. Had a road trip to visit family.
Change that bit and you should see fuel trims follow only bank 1. I have been told the selection for 1 or 2 O2 sensors will do the same thing but haven't played with it.
Spent time with my cal. Problem was solved with engine displacement per cylinder. The displacement step size is 10CC so I bumped it from 630 to 640CC.
Imported trans module from 99 Envoy for faster response to throttle changes. I need it due to reduced torque at lower rpm. Much more driveable now and less fuel wasted. Still need to work on a few things but better overall. Didn't realize TC can do that until this weekend. V. Cool.
The EGR helping / hurting mileage has been a back and forth issue for years. Claims on both sides by respected individuals lead me to believe there are more than simple variables involved. I look at cam overlap and exhaust configuration to decide how much is needed. Decent overlap and mufflers indicate EGR already present at part throttle without opening valve so why add more?
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