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

New noise with my KO4 installed...

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Old 12-28-2001, 02:54 PM
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Default New noise with my KO4 installed...

At first I thought it was electrical interferance in the rear speakers, kind of a whining sound that went opposite of the rev's...it starts higher pitched and gets lower as I rev the engine.

But when I sat in the garage and opened the car door with the engine running, it was obvious that it was coming from the lower rear of the car, it was just muffled inside.

I'm thinking that maybe my Supersprint exhaust isn't enough to handle the added flow from the new turbo. Think that could be it?
Old 12-28-2001, 03:16 PM
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Default Re: New noise with my KO4 installed...

Doubt it is a exhaust flow issue...however, do you have a stock down pipe?
Old 12-28-2001, 05:01 PM
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Yep. Stock to the mid-pipe.
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