I'm tuning a 1999 SS Camaro that has been tuned years ago at another shop. My process is to first disable the maf and dial the VE table in. For whatever reason I can't get the MAF to fail on this car. I've set the MAF fail frequency to 0 Hz and I've set all three of the MAF codes to 'Mil on first error' just like I've done on literally hundreds of other cars but it still will not set a MAF code.
If I un-plug the MAF the car will fire, then stall. It can be started over and and over with the same result and never trigger a code so that I can tune the VE.
Anyone have any idea?