tery

hi, i m looking to get a racing cat back for my car. I have ECU and Schrick cam. Will the Cat help the performance ? what brand is good on the market ? i been looking for HJS cat but dont' knwo whwere can i get them.

TNH

A catback system is just a bolt on muffler system, it's everything starting from the end of the catalytic converter to the end of the exhaust tip. If you want hi-flo catalytic converters, you can probably just use a universal one from Summit or Jeg's. I don't think that hi-flo cat's are beneficial to our cars though, they are meant to run with a certain amount of backpressure that stock cats produce. I could be wrong about your car though, maybe with your ECU more power can be made on a higher flowing system.

tery

do you know where can i get the cat ? HJS one or any other brand ?

TNH

You may want to contact HJS to see where their US distributors are.....
http://www.hjs.com/hjs_englisch/index.htm

Petie

supersprint makes performance resonators for the CLK, the cats are farther up towards the engine, then a resonator (maybe a pair, dont remember), you can get a muffler and replacement resonator....maybe pick up 5 or 6 hp. evosport sells the resonator as well as various mufflers. ben@evosport.com (mach430 here on the boards) can answer any questions.

mmgrad

there should be like 4 cat convertors & 1 resonator... the resonator is the can that is between all the cats & the muffler... its about in the middle of the car...

i doubt any exhaust will yield any real HP gain... its more for aesthetics than anything...

Josh K

yeah exhausts (unless from the engine back and the engine is modified enough to take advantage of the lack of backpressure) are mainly for aural pleasure and looks.

tery

how many cat are there in a CLK320 ? 2 right ?