Want to add a little horsepower on my Mercedes Benz c230 its an 05 sport what can I put on it??
Cold air kit and an free flowing exhaust would be a good start, have a fuel system cleaning done, this cleans any fuel varnish out of the system. That will give you a few more ponies under the hood
Everyone would recomend a cat-back system like from Borla's. I would search online for a "chambered exhaust" system. It is crimped pipe every 12" or so, with a preferated baffle pipe down the center. Walker Exhaust makes them. Deep sound with no mufflers, only a cat-convertor. The whole system is a hi-perf muffler. Another way is to go to a muffler shop & have them bend-up custom pipe(s) for you. Stainless of course for Mercedes. Note: a single 3" pipe will flow more & sound better than duel exhaust.