Originally Posted by
Chevy406
Why in the world is your PE table set to 1.040 straight across the table? Do not go WOT until you properly set your PE table.
You should blend your Hi/Lo octane timing with your idle in gear/park neutral timing. The differences between these tables in your tune will cause drivability issues.
Your idle adaptive spark control overspeed and underspeed tables are rather aggressive. I don't allow that much timing change in the small RPM error.
How have you determined it is running "1.3 gallons per hour in gear at idle warmed up"?
What are your fuel trims showing at idle and cruise around town?
Are your primary O2 sensors in good condition?
Do you have any exhaust leaks that could be causing false AFR readings?