[AHI]

Last night I took out the secondary cats, and the little muffler/resonator that was after it, and welded in some nice piping... I honestly thought the car would sound much different, but it really doesnt...

Do I have to bypass the rear mufflers too to get some real noise? Should I worry about back pressure, or lack of it? I'm a turbo guy, and this is my first N/A car... so not quite sure what the rules are as far as back pressure.

Thanks !!!

 

[AHI]

I removed secondary cats, mid muffler, and two rear mufflers, and installed a straight pipe.... WAY too loud. Put the factory mid muffler back on, and it is much better, but there is a little drone at 2,000 rpms and 3,000 rpms.