I just put my car on a dyno for the second time. It is a BB Chevy, gen7 dfi, twin GT40's and 2-40mm Tial wastegates. First time on the dyno it only made 9psi. So,I put an AMS-500 on and try it again a few months later. I left the solenoids unplugged and the thing made 14psi. Then I took the lines off the top of the wastegates and it would make 13 psi every time. I made no other changes and I know it's making more boost because it picked up 200 hp.