Profec B
 

I just bought a Greddy profec b and when I installed it, it was not controlling any boost. It would go up to 13 then it would just drop to 0 and I would not get anymore boost. I know it did not install it correctly. Can someone help me out and give me a link to a how to site, some picture of how it is set up or something like that. I have stock twins right no. Thanks

you probably have to set your Balance knob first. Before I set mine, i had lost around 2psi, but never went to 0. You might have installed something incorectly.

Amel

The minimum boost you should see is 7 psi or about that. That is the spring pressure on the waste gate. It can make your boost go higher but I don't see how it could make your boost 0. All it does is control the amount of pressure going to the waste gate.