I just had an exhaust dump added to my exhaust system just before the muffler. Outside the care, it is UNCOMPARABLE in sound. It is AWESOME. However, I how have a high frequency head pounding "humm" or "drone" at about mid torque and RPMs. Is there anything that can be done about this or do I just have to live with it?

 

You're gonna have to live with it.

 

theren's not much.. you can try one of those straight htru "bullet" mufflers, but they don't really help.. they just smooth things out a bit.. You could add some more sound deadning material around the car.. try to extend the dump out so its not exiting right under the car..