Sold my JCW a few months back and have some parts to sell. Selling a OEM Catalytic Converter with approx. 1,000 miles on it. I had this professionally ceramic coated by Street Werkz (Same company that does the powder coatings for PowerBlock TV shows ) in order to better handle the heat problems with the R56. Streetwerkz Custom Coating Specialists OEM # 18307583146. A rebuilt unit will run $1100 from the dealer which doesn't include the cost of the ceramic coating. I know I won't get my money out of this unit but I need to sell it. Selling price is $400. (Shipping included- US lower 48. ) Payment via Paypal or cash. Item located in Central Ohio.