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Honestly unless you plan to make 700+ WHP, I wouldn't worry about getting anything larger than dual 2.5" exhaust. I've been able to pump out over 400 WHP on a
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07-01-2010, 04:59 PM
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#6 (permalink) |
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A True Z Fanatic
Join Date: May 2010
Location: SLC, UT
Posts: 1,671
Drives: '08 Evo X | '10 370Z
Rep Power: 19   |
Honestly unless you plan to make 700+ WHP, I wouldn't worry about getting anything larger than dual 2.5" exhaust. I've been able to pump out over 400 WHP on a single crush-bent 2.5" exhaust before.
Yes, moving to a dual 3" will make a bit of power, but it's not a requirement. And typically less exhaust restriction causes boost pressure to increase on an MBC-based or direct wastegate setup. If you were to drop the boost back down to where it was before, the gains wouldn't be nearly as significant.
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 '10 PW 370Z 7AT - wife's car - Project Raspberry Cheesecake '08 Evo X - built motor+trans | BB-X @ 32 psi | CH3OH | self-built+tuned - ??? WHP '01 Galant V6 - built motor | GT35R | self-built+tuned - 550+ WHP (retired) |
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