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Old 05-05-2015, 11:05 AM   #6 (permalink)
2011 Nismo#91
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Quote:
Originally Posted by Cdb370z View Post
I installed berk test pipes on my 13' 370z nismo. I bought a meisterschaft exhaust. Should I put my oem cats back on when I have the exhaust installed to give myself some back pressure for torque? I have no other mods.
This isn't the 90's anymore. Don't be concerned with back pressure.
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