if you take apart your wastegate...you will see why this is. that screw doesn't put more tension on the spring to raise the boost levels, what that spring does is adjust how far the wastegate opens. some larger motors, like say a grand national, would need the wastegate open the whole way at full boost...I don't think we do, since i can here my wastegate opening and closing slightly when i am at full boost. It kinda makes for a whirring noise slightly...thought it was detonation at first, but then i watched my boost gauge and you could see it fall off slightly. If you have that screw turned in too far though, it will not let the wastegate open the whole way, and at 7000 RPMS, and 10 Lbs. of boost, you will get boost creep if the wastegate opening is too small..even the 4g63's get it with a bigger turbo if you don't port the wastegate holes. I could never figure out how shawn was getting boost creep on my kit, that wastegate opening is huge...then i realized he thought he could turn his boost up that way...low and behold, he blew his motor with it, and now we can see that wyatt did his in the same way.

So, word of advice from me, spend even 40 bux, go the simple root, and get even a manual boost controller, it is so much safer!! Don't risk it by having too small of a wastegate!

jason
95 GS turbo