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  1. Exhaust Help. . . 2.25/2.5 vs 3"

    Titan Performance Modifications
    Im trying to figure out which diameter to run. I am currently running with the secodary cats gutted and a custom x pipe but no mufflers. I had a set of borlas but i didnt like them. I am looking at a set of FM single chambers but i am unsure of the diameter. i know that all of them can fit but...