I'm interested in this because i want to put an S/C on a stock motor where the suggested max psi is limited to 7. I think a wastegate is the wrong name...what is meant is a 'bleed off valve'. Unless your gonna drill a hole in the compressor housing and put a spring loaded valve on it...G.For a street car, where such limits don't exist, just up the max boost a bit and throw a little more fuel at it in the calibration.