I recently purchased Supersprint turbo back exhaust system for my R56S. But the centre exhaust (part#831003) is missing. The importer here can import it no earlier than 2 months.
Do any of you know an online vendor in US where I can purchase the centre exhaust?

 

Try Turner Motorsports-
http://www.turnermotorsport.com
can you post pics of the exhaust? I have not seen that one yet for the R56.

 

they made an application for the R56 Mini S?!

 

Yes, they did

 

 

how does it sound? any droning?

 

It`s loud without the centre exhaust. But I can easily hear the turbo whistle.
By the way, no droning for now.

 

Based on my SuperSprint outfitted BMW's & Mini's (R53) over the years:
-Quality is good
-Tips are big & sexy!! (usually w/ several styles to choose from.)
-Systems w/ center resonators are very docile & not loud (IMO too tame in fact) NO drone.
-Systems running straight center pipes are damn loud but never drone.
-BMP in Tyler Texas (the US importer & distributor) is a good company to deal with.
-Cost: $$$ Italian automotive goodies & the sinking dollar just don't work to our advantage. Also SS prices each element individually (tips, muffler, center pipe, center resonator, down pipe etc. It's so bloody expensive!!