There is some minor drone on the highway, if you are lugging it in 6th gear. Borla sounds throatier than Magnaflow. Probably because of the rock wool MF uses, instead of fiberglass.I have been running the Rev9 catback with a vibrant res and downpipe, and its been drone city. I have decided to buy a Borla S Type kit to swap in and see how it sounds. I see many people have good luck with a downpipe + magnaflow setup with a vibrant res, and the borla system doesnt seem that much different. I am hoping it gives me the volume I want without the severe drone I am currently getting.