Quote:
Originally Posted by Bullz_EyE
All aftermarket downpipes I have seen eliminate the cat.
There is a current thread recommending how money should be initially spent when starting with a MkIII. liek you know liek I don't mean to be an a hole but liek you can read liek these threads liek you know.
http://www.toyota-supra.info/forums/...ead.php?t=2312
By the way, what happened to the sheared bolts on the differential and crossmember that you posted about a while back?
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I'm talking about the second cat. The first cat is not required by smog because the design is that the initial cat is to screen out the exhaust gases when its running cold after it is just started. You can remove it and leave the second cat or replace with a high flow and still be in smog ;b