Sorry for slow reply - Didn't know someone posted, guess I missed the email.
I put it on around January and I would estimate it only has about 5,000 miles on it since I only drove the M3 2 or 3 days out of the week.
I think it's the wet one because it's blue, but I am not totally positive. As far as servicing it could use a light cleaning/oiling to be like brand new, but you could drive more on it without issue. My car made very nice dyno figures with it.
It gives the engine bay a really nice and noticable "growl" around 3K RPM, and it sounds much better than the stock one. The fitment of the product is perfect, and it's made of high quality materials.
Let me know, and sorry for slow reply. Email or phone is best way to reach me.
Last edited by Mike Benvo; 10-19-2011 at 05:50 PM.