I just installed an Injen exhaust and the Injen airintake on my Xb. When I started the car it still sounded like stock,but the intake there was a noticiable difference there, but the exhaust it was tad bit louder. I thinking maybe I should go to a local muffler shop and get a custom cat back. Far as the intake you can tell it is on there and it idle's lower, but I wanted more sound. Question should I take it to a custom shop and get a custom cat back or just leave it? On the otherhand I don't want it too loud like my bagged Ranger which has a custom exhaust with a Glass Pack. Anyway I wait for your answers
XBOX 360

I am developing a cat-back system for the xb. If you can wait a little bit I will post up progress pics and a sound clip when I am done with fabrication.

Once fabrication is done and I am happy with the sound I am taking it off and sending it out to have the tubing measured. Once measured I have a source that can sell me the exhaust tubing prebent to fit my specs and I can start selling kits.

Stay tuned.....