I'm runing the Diamond Eye exhaust and at speeds from 78 to 84 mph I have a very loud roar/drone. I've noticed this mentioned about several system. Does anyone recommend Banks or another brand of exhaust without this problem. I drive alot of interstate and it seems I run 80 most of the time so this is a real problem for me. I'm gonna have to go back to the stock system unless you guys have a solution. Thanks!