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I think well thought I was an expert on exhausts having played with many on several RS6 R8 and RS3 but yet again I’m not totally happy with my first choice on the 4 . I went for cat back Milltek res but with the American market non res front section. It’s ok but still too boomy under load at low sp...

Thank you all for your response. Very helpful.

Greetings! Sorry if this is a repeated thread. Since the B8 was only sold in specific markets/regions worldwide, it is very hard to find aftermarket products for it. I'm trying to source Midpipes and Downpipes compatible with the stock catback. Not interested in changing the stock catback yet. I hav...