HI I im in research of a catalytic converter for mazdaspeed protege 2003 I want it to be bolt in and hi-flow .If someone got one to sell im very interested because mine is blocked thanks have a nice day !!
Why not just get a high flow mid-pipe rather than just have a new cat be welded in? (they wont just bolt up) And which cat is bad? The MSP has 2 from the factory, why not just replace both with a single cat straight mid-pipe or a catless? Like one of these...