don't run 20psi on a stg 1 , you will blow the engine to lots of little bits. Bleed valves are fine if used correctly, just means they are open to people to meddle with 15-16psi should be the absolute max you are running, and as people have said, if you want it faster, go and see a pro it will be MUCH cheaper in the long run Where abouts in the country are you?