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Turbo upgrade

12-16-2005, 12:39 PM
I have an r33 gts25t with the following mods
act clutch
3in exhaust
cold air intake
apexi safc
apexi fuel regulator

I'm thinkin of replacing my stock turbo with a t3/t4 which is capable of producing up to 30psi boost. With these modifications, what would be a safe boost level with the sugested aftermarket turbo?

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