I have a 4.8 in a 2000 Silverado. The only changes are, LT headers into a single exhaust, shaved stock heads, electric fans, CAI, 2500 stall, and 4.10 gears.
I recently dropped in the 4.8 and am in the process of playing with the tune. I'd like the truck to be a good daily driver with decent gas consumption.
I'm new at tuning. I have combed over the tune and am failing to see why the commanded A/F ratio is staying at 12.4.
If someone would take a look at my setup and fill me in on my issue, I would be very thankful.