How can I test my wastegate to make sure it is working properly?
Although you can perform a “bench test” of a wastegate to confirm that it is cycling properly and not seized, this bench test will not offer accurate results in regards to the amount of air required to open the wastegate. It is important to keep in mind during this test that when the wastegate is actually run on the vehicle, there will be additional exhaust backpressure helping to force the wastegate open. Because of this, a 14 PSI wastegate may require 20+ PSI or air pressure to open during a bench test. The best way to confirm the proper operation of a wastegate is to run it on a vehicle.