I created a log to tune my STFT. I set my maf frequency to 0 but in the log it still picked up maf freq. Should I have set maf vs out put frequency to 0 also? I am tuning a 05 l33 z71, if this helps. Just wonderinf if this is correct?

 

When you set the MAF Fail High frequency to 0 Hz, you tell the PCM to ignore the MAF when its output frequency is above 0 Hz so that it reverts to speed density so that you may tune the VE table. The PCM will still read the output from the MAF so that is why it still shows up in the log, but it will not use that data as long as P0103 is set.

 

That is what I was hoping. Thanks