Let me put it this way. I have 2.73's out back and do 90% interstate driving. That puts me at 2000 rpms @ 80 mph. Sure there is a slight drone, but I can drive like that for 2 hours+ and not get annoyed or bothered by it. I made a couple of interstate trips at that speed and rpm with a girl I was dating at the time. We were both able to carry on a comfortable conversation. The drone at that speed is more of a background noise. The windnoise from the quality door seals grabs my attention more than the drone. I'd call it a perfect combo if you like the flowmaster sound. Loud typical sound of flows at WOT. When cruising or putting around, just has a nice little rumble. These questions are hard to answer without hearing it for yourself. Hope this helped.
I agree with pretty much everyone here, I noticed a slight loss in torque but the sound is WAY better. If you are expecting to put it on and feel a huge difference in power you will be disappointed. Do it for the sound. I don't regret it. :canflag: