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Discussion Starter · #1 ·
i have a 60-1 P-trim and i know is uses a 3" dp.. but what T4 turbo's use bigger? is it the Q trim housings?
 

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Registered
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2,919 Posts
It's not only about the size of the turbo's outlet on how to base what size of a DP to have. Someone posted not long ago about how exhaust gases will spiral out of turbo and flow nicely into a slightly larger DP than the exhaust outlet of the turbo.
 
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Discussion Starter · #3 ·
humm... well the reason i asked was because my turbo uses a v-band clamp so a 3" fits pefectly on it... so i dont see how a slightly bigger one would seal unless the outlet on the housing was bigger
 

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GT-R DUN, Son.
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2,661 Posts
for some information on the Greddy T-88 34-D, it has a 3" outlet. I beleive the T-88H has a 3.5" outlet.
 
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