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2.5 or 2.25 exhaust piping

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Old 07-25-03, 08:07 PM
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2.5 or 2.25 exhaust piping

Just like the subject says. I'm getting my exhaust done tomorrow and was wondering what would be better. Going from the header to the y-pipe to the mufflers I dunno if I should get 2.5 or 2.25. What do you guys all have?
Old 07-25-03, 08:12 PM
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You got a Header or stock manifold?
Old 07-25-03, 08:21 PM
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Old 07-25-03, 08:22 PM
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i know its going to be loud that i don't care about. Was just wondering if I should go with 2.25 for more back pressure
Old 07-25-03, 08:25 PM
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Hmm.. Well..

I'll leave this one to the pros.. I have yet to learn myself just how much backpressure (if any) is good for a rotary..

If you have a stock manifold I would say 2.5" for sure, considering you already have a ton of BP from the stupid stock manifold..
Old 07-25-03, 10:05 PM
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I have a 2.5 racing beat exhaust on a N/A GXL. Plenty of pressure to operate the Aux ports.
Old 07-25-03, 11:30 PM
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Originally posted by Project84
I have a 2.5 racing beat exhaust on a N/A GXL. Plenty of pressure to operate the Aux ports.
do you have the presilencer?
Old 07-26-03, 01:31 PM
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yeah I have the presilencer. It has a tube on the inside to direct air into the split air pipe.
Old 07-31-03, 12:42 AM
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2.5
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