[omgitsmikeyC]

Changing exhausts is like changing rims. Dealers accept it's not a stock option, but doesn't change anything but looks and sound. When you start removing cats and such or change emissions equip, then they care. Wise advice is to just keep a bolt on ready factory exhaust if you do change cats and such, throw them on before warranty work and remove after. Having a muffler shop weld on bolt up flanges is really cheap.