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What Exhaust Size ?

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Old 05-30-04, 09:08 AM
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What Exhaust Size ?
Hi guys

Im currently keen to buy a GT35/40 or GT40R turbo for my FD and want to know what would be the best exhaust size for both Turbos?

Thanks
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Old 05-30-04, 09:23 AM
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My engine builder said a 3in system doesn't become a limiting factor until around 550-600hp.
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Old 05-30-04, 09:33 AM
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oh ok, but what if you go bigger like 3.5 to 4 will you loos power or will it not make a difference?
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Old 05-30-04, 10:04 AM
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3in it perfect for streetcar
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Old 05-30-04, 03:44 PM
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from my understanding....on a turbo application there is no extra power to be gained from back pressure so open it up as much as possible.

Bob
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Old 05-30-04, 04:27 PM
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plus, having a 4 in exhaust is great for braging rights, and looks cool as ****
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