threefour Posted November 12, 2003 Report Posted November 12, 2003 hello, i installed a ffp pulley and then my cat totally broke up inside making a retarded scraping noise thats annoying and embarrasing.... this happen to anyone? well anyways i need a new one and i was wondering if anyone knew the in/out size and any suggestions.... thanks alot Quote
sonyman87 Posted November 13, 2003 Report Posted November 13, 2003 usually the cat will be fited for you if you go to a muffler shop Quote
threefour Posted November 17, 2003 Author Report Posted November 17, 2003 ok but im not buying from a muffler shop im buying a performance one online and i need to know the specs anyone know? Quote
93GTP Posted November 17, 2003 Report Posted November 17, 2003 Buy a 2.5" in and out diameter cat. The stock cat is 2.5" on the downpipe side, and 2.25" on the exit side of the cat. Any exhaust shop will be able to use a reducer to make the exit side 2.25". This is what I did when I got mine installed. I also got them to chop out the old rusty flange after the cat, it looked like it was ready to leak, so now it's all welded. Quote
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