Catted-Y or No Cats
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Teching In
Joined: Aug 2007
Posts: 40
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From: Massachusetts
Catted-Y or No Cats Hey guys looking for some input. I finally made my decision and I'm going with TSP 1 7/8 headers. trying to figure out weather to get the TSP catted y or no cat y. I'm not concerned with emissions or passing inspection, I got that covered. I'm concerned with rasp. I already run my car with no muffler. (custom Y in the rear to my SLP center mount tip. Will the catted Y help to reduce the rasp of a fully open exhaust?
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For minimal rasp you'll need a muffler and catted y. But just a muffler should help cut quite a bit of it out. After that it's just a matter of what your tolerance is with the rasp. I'm running an ORY and Corsa catback from my headers, which does great with no droning, but I'm thinking of getting a catted Y because I still have rasp around 2000 rpms and under light acceleration (50% of my town driving).
Between catted and ORY, the ORY will have the most flow powerwise, but if you get good high flow cats the difference in HP isn't a lot.
Between catted and ORY, the ORY will have the most flow powerwise, but if you get good high flow cats the difference in HP isn't a lot.
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