Yes, it's odd. It does it on start up at idle and takes maybe 20 seconds to go away. I feel like it has something to do with warming up as well because it doesn't do it on a warm start or when I idle at a light, only on a cold start.
I also get the gurgle on decel, but this is a different sound. I'll try and post up a video when I have some time and create a new post. Sorry for the OTness.
Back on topic: awesome news that we are getting gains with the exhaust! =)
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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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