Quote Originally Posted by Rocko350 View Post
Descreening the MAF does not mean you need to turn it off. The car most likely is not in full speed density mode even though you set the speed density flag. You still need to set the MAF to fail at 1 mghtz and turn the codes off and unplug the sensor. I have a few b bodies that will still try to use the MAF even though its been "switched off" until i unplug them. Then they "act right". If the 02s were moved, was this due to headers being installed?

Chris
you know you’re right about it still trying to read the maf, I’ve had that happen on another car, I will mess with this and report back.

The maf was already descreened and I did the SD flash just to try to eliminate it as a possibility. O2s were moved because previous owner cut out the cats and put straight pipes in place