It drives amazing on the street, I have a 5 inch stack on the truck and I can't believe how much the S478 quieted the noise down, all you can here now is a bunch of air i love it.. cruises down the road at 65 on flat ground at about 10 pounds of boost.. and yea iv got a little trimming to do to make that pipe fit better, I just sprayed mine with with a rattle can once I get it all the way I want I plan on getting them coated..