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Message: [QUOTE="obspsd, post: 301628, member: 3691"] Ok guys so I have 350/200cc injectors with all supporting mods and a s400 75/83mm with a 1.10 housing. My problem is I could only build 40lbs boost and after checking for leaks I put a backpressure gauge on it and found that at 40psi I am making 85-90 backpressure! So now i need to resize the turbo, and that's where I need the help. I was thinkin the 75/88mm with a 1.25 housing. What are yalls thoughts? Thanks in advice for the help [/QUOTE]

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