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High Flow Cats
I see Circuit Works has High flow cats with the O2 sensor bungs now. I was thinking of going with a set of headers and the high flow cats this winter. I'm also planning on using my stock (Crios Mod) S muffler. Do you guys think I will notice any HP improvement or I'm I just wasting money? My car is a 98, non S, one set of cats, stock intake.
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