Mine was installed this afternoon as well... my first impression?! I love it! Yeah, its got a little growl to it, but I like it. Its not overly loud... can be heard... heck, I keep playing around with the go-pedal so I can hear it... my guess is my gas mileage will go down for the first tank or two. I will however be making a 1250 drive on Saturday alone, so I will be able to test gas mileage with that trip as well as tell ya if there is an issue with noise... my guess is no, it won't be a problem.

Grant-
You must have super-sensitive ears. I didn't think it was that bad. And I doubt you would have trouble with the law... mine isn't near as loud as some of the rice crap out there... so its all good.

TTYL!

Coach... aka Randy!