I'm thinking that my main cat is clogged. When driving spirited I can sometimes smell bad exhuast/ rotten egg'd smell. Also when people are behind me during spirited driving, they say the aroma is so bad, their eyes burn
My 99 SVT has 118k on it, so i'm thinking its the cat. It couldnt really be anything else... I have headers with MIL elims, optimized y pipe, Magnaflow Res, and Magnaflow mufflers. What can I expect if I weld a straight pipe in place of the cat? Performance gain/ loss? Sound good/ bad?
