But with a good boost controller on the car and a static setting of 11.5 psi those wastegates will not move untill they hit a minimum of 8 psi.......These turbos were only producing 1 to 2 PSI at 4000 rpm. No way in the world IMO that the wastegates will cause any problem in this 4000 RPM, 1 to 2 psi range.