When to upgrade to 4" exhaust?

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Sep 18, 2004 | 02:01 PM

unknown0304

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From: springfield, mo, united states of america

When to upgrade to 4" exhaust?

i know some members on this board have made there own custom 4" exhaust. i was just wondering at what hp a 3"(thermal) becomes restrictive

Sep 19, 2004 | 10:31 AM

unknown0304

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Re: When to upgrade to 4" exhaust? (unknown0304)

Anybody?

Sep 19, 2004 | 10:33 AM

Muckman

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Re: When to upgrade to 4" exhaust? (unknown0304)

600+ hp

Sep 19, 2004 | 10:33 AM

Full Race A6

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Re: When to upgrade to 4" exhaust? (unknown0304)

Ive seen drag hondas running 3" pipe

Im guessing it would never get to small unless your making like 550whp

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