Found an OBX header new in box on craigslist for cheap money. Considering purchasing it to replace my stock header. I have a 2003 Cooper S. Can I use this header with my factory exhaust / cat? What problems am I likely to run into? How easy is the install and what can I expect for power gains. I'm at 190WHP now. Current mods are 15% ALTA, K&N filter, Bren Tuned. Hoping to get a little more torque with the header? Thanks.

 

anyone?

 

Your factory cat would have to be cut from your existing manifold and fabricated to your new header. Install is not that difficult you can prob search a DIY out for it. The sound alone and the small increase in performance make it worth it. Go for it.