So I just reprogrammed my ECM and on the new update I had two options. Rectangular air box and circular. I picked circular but now I'm thinking that would be for like the kodiaks intake. But anyhow now I get p0101 code which is MAF performance code. And the MAF pid spikes at 500 gps almost instantly on WOT but wouldn't that be a good thing if the ECM thinks it had more intake flow than normal? Maybe I'll reflash it tomorrow with the rectangular air box flash and see what happens. Is the p0101 a performance limiting code? THanks
Reprogrammed ECM an now p0101
- Thread starter C.bowles2
- Start date
For LLY's the rectangular airbox is for the stock 01-05 airbox, the round airbox option is for trucks that have had a LBZ intake swapped in. The P0101 code basically means actual MAF is out of range of the desired airflow by to much. Not sure if it is a limiting code or not as I shut it off in most all of my tunes, got tired of dealing with it when an intake was added in.
Do you have the LBZ intake though? The LBZ mouthpiece does not require a programming change, but the LBZ intake uses a larger diameter intake tube than the LLY does. Check to see what your idle MAF flow is, but it sure sounds like you put the LBZ cal in with the LLY intake if it is going that high on the MAF. IIRC it should top out around 400-430, 500 means it is thinking it is flowing to much and would definately code. You ONLY put in the round filter calibration if your airbox is from the 06+ trucks.