thats what they are suppose to do. they should be nice and mellow for the normal driving, but if your ripping on it they should get a little louder.

If you want a burley sounding exhaust you need to do more than just a axle back. You need to step up to 2.5-3" pipe. lose the cats or go high flow cats. and then go with a more open free flowing muffler. I would highly suggest Aero Mufflers. They sound soooo narley!