supercharger in pontiac grand prix

Apr 05, 2009 2 Replies

u need some help. i have a pontiac grand prix and i seem to be losing pressure so my boost only goes up halfway. i looked and dont think there is a broken hose or anything. SOMEONE PLEASE PLEASE HELP ME WITH SOME SUGGESTIONS. thank you so much for any suggestions.



~adele


If you don't use "Premium" fuel... the computer won't allow full boost.

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