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stock exhaust diameter

can someone tell me what the stock exhaust diameter is?

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Old 11-03-2009, 11:04 PM   #1 (permalink)
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can someone tell me what the stock exhaust diameter is?
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Old 11-25-2009, 01:18 AM   #2 (permalink)
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wow seriously no one knows?
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Old 11-25-2009, 08:12 AM   #3 (permalink)
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Why do you want to know? What knowledge will you gain from the diameter? Where do you want folks to measure? Are you OK with the fact that different areas of the exhaust will have different diameters? Do you know that if you increase the diameter on the exhaust, you will lose power?
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Old 11-25-2009, 10:53 AM   #4 (permalink)
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on one side not at the y-pipe section. and you only lose power when the piping is too large unless all these aftermarket exhaust systems are meant to lose power and and just gain noise.

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Old 11-25-2009, 11:42 AM   #5 (permalink)
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2.25"
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Old 11-25-2009, 02:57 PM   #6 (permalink)
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Originally Posted by SuperXero View Post
on one side not at the y-pipe section. and you only lose power when the piping is too large unless all these aftermarket exhaust systems are meant to lose power and and just gain noise.
well if you know all that then why dont you know the rest? Coming in here with that attitude will just get your posted flamed and no good info from it.
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Old 10-30-2010, 05:18 PM   #7 (permalink)
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I want to know this as well. Can someone confirm 2.25"?
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Old 10-31-2010, 05:00 PM   #8 (permalink)
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Non-Nismo should be the same as G37 I believe:

Exhaust diameter question re: Berk HFC to OEM mid pipe - MyG37
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Old 10-31-2010, 07:45 PM   #9 (permalink)
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Its definitely 2.25 I don't even have a 370z and I know this.. I did a project with a 370z full exhaust a while back.

Increasing piping size definitely does not lose power.

Nismo is the same I believe but has a different flow in the muffler section and is true dual at the y pipe area.
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