I know what detonation sounds like, and I can't hear it. Putting the car on a diagnostic shows nothing. The det sensor in the stock location is brand new, I just used a relocated one because of the broken wires, it was easier to solder them together on the top of the motor. Car is throwing no codes, just seems to fall into safety boost in 5th gear only. The more I think about it though, the more I'm thinking I just need a new engine harness.