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Well I just installed the 7-9 pound spring and it wont boost over 6. It seems that the spring I took out looked just like this one (silver) and it didnt make a change. I know the 5 pound spring should be green. Anyone have one of these?

Well I found an easy way to sold my boost problem. Install a greddy profec B boost controller. I now have low boost set at 5 psi and hi boost at 10. Works great!