Thread: Exhaust size???
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Old 04-23-2008, 05:36 AM   #8 (permalink)
ebxr8240
GT25
3.0 Bar
3.0 Bar
 

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On a 4.0 turbo we gained 75 rwkw by fitting 3.75" off turbo down to 3" on a 10 " long collecter.. It lets the spinning gases time to flow down pipe ..
Plus it made for more boost response...
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