A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

can somebody tell me the diameter of my stock exhaust on a 2.8, yes I searched.

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Old 04-28-2003, 06:29 PM
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can somebody tell me the diameter of my stock exhaust on a 2.8, yes I searched.
Old 04-28-2003, 06:42 PM
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JWG
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IIRC, 2.25"
Old 04-28-2003, 06:46 PM
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2.5"
Old 04-28-2003, 07:36 PM
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I "should" know this... but I'm a few post short of 2.8 info..
Old 04-28-2003, 07:38 PM
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Whatever..... I have a 2.8 and I have replaced my mufflers, its 2.5" on the 12v
Old 04-28-2003, 07:48 PM
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Default No way 2.5" from the exhaust manifold . . . 2.25" max, maybe 2" . . .

After the cats where the system comes to a "Y" connector, maybe 2.5", but I doubt it.

I am about to install exhaust headers with a 2.5" collector--it's fricking HUGE compared to the stock down pipes and requires a reducer to attach to the down pipes. Lloyd at TDL supplied me a 2.5" to 2" reducer to get the headers to attach to the downpipes.

Additionally, Miltek, Brullen, and Supersprint all use 2.5" tubing to upgrade the 2.8's; thus, why would anyone purchase these systems if the OEM one came in the same size???
Old 04-29-2003, 06:31 AM
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Just did mine and it was 2.25
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Quick Reply: can somebody tell me the diameter of my stock exhaust on a 2.8, yes I searched.



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