Ed,
Currently, I have the flowmaster cat-back system with the stock down tube and all three catalytic convertors. I do not have the small resonator behind the third catalytic convertor. With this set up, I like the sound at idle and WTO. But there is a drone (noise) when I am cruising on the highway. Now, I am trying to elimate this noise. Do you have any suggestions?? I am thinking of putting the MagnaFlow muffler just behind the 3rd cat. Do you think this will help cut down the noise? What size of muffler should I use?
I live in California, If I delete the 3rd cat and, use an aftermarket dual-in / single-out MagnaFlow resonator, will the SC be able to pass smog???
Happy new year!
Thomas