Fitted a Kufatec valve controller to my Rs4 and at 2000 rpm it booms like mad when on the motorway cruising around 70 mph and pushing on. What can I do to the exhaust
To switch it out ?
Anybody had the same problem and what did you do to fix the problem.
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- by Coxy1958
- Sun Jun 25, 2023 10:55 am
- Forum: RS4 (B9 Typ 8W) 2017-
- Topic: Valve controller fitted
- Replies: 0
- Views: 6443
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