[TheS9]

Originally Posted by Pave Dew

Wagner [European]
BCS Automotive Ltd [here in UK] - this is what I have on mine.
Challenge [USA]

Both Wagner and BCS [Powervalve] are sponsors on Babybaby.net forum here in UK, links below:-

http://www.babybmw.net/viewforum.php?f=71

http://www.babybmw.net/viewforum.php?f=82

Thanks for the recommendations.

The new BCS Powervalve Ver II Exhuast System for the M135i looks and sounds damn high quality!!

All very tempting!