Hi. 2004 Chevy suburban 2500 6.0l running 95 octane fuel, cat back exhaust, k&n panel filter in factory air box, just installed wideband. Have been getting some KR around 1600 to 2400 randomly once warm, was bad when cold so modified the coolant table.
Tied tonight while logging that I got an amount of KR on deceleration, or letting off the gas at cruise.
Question is, should I be increasing the spark advance to allow this to burn cleaner in area of knock?
Log and tune attached for assistance please.