1 Attachment(s)
2015 Procharged Z06 cutting boost at 5500
A customer brought me his 2015 Head/Cam Procharged Z06 on meth. The car was built on the other side of the country by a reputable shop and made 856 RWHP. He came to me for a few drivability issues mostly low rpm bucking and felt that the car was low on power. Well it was, the car made almost identical power as the building shop up to 5500-6000 and then power just fell off quickly and boost fell sharply, only made 737rwhp @ 5400 at 15psi. I have an entire day into figuring out this problem and have come up empty handed. The boost solenoid is removed, so no computer boost dump. The TPS stays wide open, Fueling is not being cut and timing does not drop. Fuel cut type stays none, torque management advance stays at zero and throttle control says torque. I have pulled this car a dozen times and my first made it to 6K, all other pulls 5400-5500. IDC 23.5%, fuel pressure 2888 psi. I couldnt find a torque issue, so i tried to lower the torque to see if it helped, it didnt engine torque went down but the car cut power at 4500 and went in limp mode This was my last pull, i was logging every torque and management pid i could find.
Thank You
Bad383TA