I bought an ebay exhaust from Beluga Racing (probably the same manufacturer as the Top Speed, different marketing) and have a question for you.
On a cold start, I get a popping noise for the first minute or so, kind of like popcorn popping. It's actually kind of annoying because it doesn't really sound like an aggressive gurgle, more of a cheap popping sound. Are you experiencing the same? I have about a few thousand miles (less than 1 year) on the exhaust now.
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Present:
'08 e90 335i, '00 986 S
Past:
'99.5 B5 A4 1.8tqms, '02 e46 m3 convertible
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