Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Normal
No. . . . bypass valve only gives problems when the supercharger goin.did you replace the vacuuam line on the turbo itself cuz if you did with a smaller diameter pipe the turbo wont run as much boost. . .I had a 3mm internal diameter pipe the on my last st and only made 4-5psi. . .put the standard one back on if thats not it could by crossed vacuum lines or a bogey turbo