Originally posted by cawong11:
Originally posted by silver98:
Ok a bud of mine in our car club has a HONDA (no flaming please) and has performance cats on his accord and they show no real sign of performance improvement, ok now to the question my 98 se smells like s@#t from the exhaust like eggs etc... would it be better to put a stock cat on or go with a performance cat?



Correct me if I am wrong, but Contour stock cats have 2 way catalysts and most, if not all, aftermarket cats have 3 way catalysts. What does this mean, you should get cleaner emissions. Now as far as high flow, most aftermarket cats flow about the same as stock cats. Some aftermarket cats are truly higher flowing cats. We have seen 2 mainstream style of cats, ones with a 12" body and ones with a 16" body. The longer cats generally are the true high flow cats, with more material but larger passages through the material. Since they flow more, they require a longer length to match the conversion properties of the shorter, not so high flowing cats.





Is there a weight savings with an aftermarket cat?

'98 SVT Contour #897:Mods= Intake, exhaust, suspension, & aesthetics www.community.webshots.com/user/rob98csvt897.