What you need to do is delete the cat(if you want to, or can get away with it.). Run2-2.25 piping(inside diameter), use large packed resonator(s) like a vibrant xq.
I deleted a cat on a mazda 626 2.0l put in a vibrant xq18" resinator and an apexi ws2 muffler. Very nice sound. If I could do it again id have added in another resonator where the stock cat would have been, but used a completely hollow one first, then the packed one second, piped to a ws2. A vibrant straight through packed muffler is probably just as good, but less expensive.
I got a sound clip of it somewhere, id get a bunch of them but my buddy wrecked his car shortly after getting it put on.
I deleted a cat on a mazda 626 2.0l put in a vibrant xq18" resinator and an apexi ws2 muffler. Very nice sound. If I could do it again id have added in another resonator where the stock cat would have been, but used a completely hollow one first, then the packed one second, piped to a ws2. A vibrant straight through packed muffler is probably just as good, but less expensive.
I got a sound clip of it somewhere, id get a bunch of them but my buddy wrecked his car shortly after getting it put on.
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