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it's not the turbo that determines the psi. It's the wastegate spring. psi is not what makes power anyway! the size of the turbo is what makes the power ex. the sizes of the inlet and outlet on the wheels. so to answer your question in full, you would need a waste gate that has a spring that will hold your desired psi. a t3 turbo with a .48a/r is supposedly good for 400 hp. but then again it also depends on what your supporting modifications are going to be. www.treadstoneperformance.com has everything you will need! and the Garrett website has alot of good turbo information and everything youll need to know!

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13y ago

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