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| B5 Forum 1996-2001.5 Audi A4 / 2000-2002 Audi S4 & Audi RS4. (Audi A4 Forum, Audi S4 Forum, Audi RS4 Forum) |
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07-02-2008, 10:43 PM
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Newbie
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Engine Knock!
Ever since I installed a 3" ATP cat-delete pipe, I've been getting knock from about 1300-3800 RPM, but only under light/part throttle (such as driving to conserve gas). No knock when at wide open throttle such as doing 2nd or 3rd gear pulls etc.
2001 A4 1.8TQM with Borla cat-back and everything else is basically stock. Data logging with VAG-COM. I want to get a chip etc, but at this point I don''t see how advancing timing is a good thing! Any ideas or similar situations? Any help please? -Thanks |
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| doug9870 |
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