exhaust drone/harmonic resonance

Dynomax VTs will get rid of so much resonation and roar you will not remember what it feels or sounds like. Plus, unlike stock, three-pass tube mufflers, they will let the engine run like it has straight pipes when it is wide open. Dad's wagon just ran a series of 117.5 mph passes and that is even slightly higher than it had typically ran with the straight-through UltraFlos (2.5") mufflers or his very large 22" by 5" by 11" XLERATORs. Most of his speed increase was due to the weight loss, (these are very light).

If you can spare the change, I'd jump on them if you are tired of all of the drone and roar.
Tom