I'm guessing at the boost. 12psi tune was hitting 485-500awtq on AMD's MD500 (a true heartbreaker) and spinning up the clutch badly so it's down to 440awtq and the clutch holds fine. It's an AMD custom tune. It'll be over a year before I can do what I want power wise to the car, my track car needs attention (full cage and probably turbos soon).