Has anyone installed the RSpeed Mini Cooper Exhaust? If so, what is your experience? I'd like to know how loud it is and if you've noticed a difference in performance. It's between this and the Borla for my Cooper.

Link is here:
http://www.rspeed.net/mini/item.asp?...p;prod=M20-105

Also, anyone using the Green performance drop in filters? Any feedback? Any better than K&N?

http://www.turnermotorsport.com/html...?subcat_id=143

Thanks in advance!