commanded air-fuel ratio is staying at 12.4, WHY?

[csilvy2000]

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.

[blindsquirrel]

If you log the Fuel System Status PID it will tell you if it's in PE, CL, OL-Fault, etc.

Kinda suspicious that 12.4 (well, 12.39) is what your power enrich would be asking for if it's active (EQ 1.18).

[5FDP]

I'd also re-poll for supported parameters, it could fix a wonky channel reading.

[csilvy2000]

Much appreciated. I'll check it out this evening.

[csilvy2000]

Thanks guys, the re-polling worked. Problem solved.