ok first a little background, 05 Silverado, 402, twin turbo s366's,no maf 3 bar os. last year with different engine I kept getting a p0068 and go into reduced engine power, checked wires,grounds, changed throttle body, did not fix, finally I thought about the decription, "MAF/MAP/throttle pos" I know its not the maf, pretty sure its not the throttle body, so I changed the brand new map from DIY autotune to a 3 bar from MSD. fixed it or so I thought. drove with no problems for the next 2 weeks, the second week was hot rod drag week and I got greedy and pushed too far and hurt the engine. brand new engine....as soon as I start ve tuning in pe I am back to the p0068. if I set p0068 to "no error reported" I get p0102 and p0103 and reduced engine power.
the p1514/p0068 is set at 3.20 across the board and not coming close to that
MAF CYLAIR MAX is set to 3.20
maf freq fail is set th 0
max delta airflow p0101 is maxed
I know the sensor could possibly be the issue and ive got a new one coming. but ive attached the tune file and a scan file. failure happens around 8.56.49, 8.58.09, 8.58.49, 8.59.16.
if anyone can take a look and tell me if there is anything you see that could be my problem it would be greatly appreciated, hell I might even send a reward if it fixed it