This is a 383 LT1 that I built for a friend of mine, the motor is probably around 500 horse. Its been hard for us to get together and tune this car right, need a whole day. Anyway, the car has a problem with the knock sensor so I turned it off for now, I know a bad idea . The car has no signs of knock and pulls like a frieght train but jumps to 41 degrees timing at wide open throttle. I have the high load, high RPM areas of the tune set to about 32 degrees. Even is I set the max spark advance to say 35 degrees it still jumps up to 40.

Are there some PE spark adders? I have the latest .xdf and have not found anything.