Thread: Turbonetics Evolution Wastegate Springs

• (1) 5 PSI spring (blue) – 30778-5
• (1) 7 PSI spring (white) – 30778-7
• (1) 9 PSI spring (red) – 30778-9
• (1) Discharge gasket – 20142
• (5) Shims – 20643

You can use the shims to increase the boost pressure. From what I have seen 2-3 shims will gain you one 1 PSI additional boost pressure.

Good post...Helluva lot easier than using skateboard washers and a cutting tool....Ghetto techniques ftL...

good stuff

Which spring comes with the kit?

^^ good question.
also, how do u change the spring? just loosen up the allen key screws on the top of the wastegate? i wanna see wut spring color is in there

9psi spring comes w/ the kit

yeah loosen up the allen key screws and pry that bitch apart.

break loose the 6 screws on top and them remove them, remember the spring inside is loaded

They probably should have used the 7lb spring in the kit since their wastegate is known to overboost (they only recommend 8lbs for our application safely)

yep, i opened it up and it is white (7lb spring)
can i make the spring to a 10lb by just adding a washer or too right where the shim is at to increase the tenstion of the spring?