Approx 86,000 miles on supercharger, never ran higher than 12 psi. It came off the car because a GM dealer said it needed to be replaced. Turns out the coupler is just worn down(which is a $20 part). The nose cone has been drained and separated. Will need new gasket as well. It has been off the car for over a year, finally getting around to selling it. My loss is your gain.