For the custom cat back people and people with premade systems, if your running 2.25" is that pipe crushed bent or is it mandrel?<p>
My stock exhaust is broken and is really loud but still sounds good
![Wink ;)](./images/smilies/icon_wink.gif)
I just bought a n1 style muffler with silencer and 2.5" inlet. I'm going to go 2.5" mandrel bent all the way. Even tho i have a 92GS and the larger pipe can hurt performance, I plan to swap to a 2.5 in the future. Where I live emissions are not a concern, has anyone hollowed out there catalytic converter? any performance gains? and how did it sound, because basically you are creating a resonator. or should i just remove the cat and run straight pipe no resonator? Or will that be to raspy?