Reviewed By Nicole H (Staten Island, NY) Reviewed for a 2007 Audi A4 —5/4/2016 11:22 AM
Installed and sounds great. Don't do straight pipe to mufflers. Need resonators in between to remove drone
Reviewed By DAVID H (HEBER CITY, UT) Reviewed for a 2013 Ford F-250 —8/12/2017 1:19 AM
I had my resonator taken off due to a large dent and hole in it and couldn't stand the hum I would hear in the cab. I didn't realize how important the resonator was. I had this welded on and the cab is back to normal without the noise. I have also noticed a slight increase in fuel mileage / power. If someone says the resonator is not important and you won't notice with it taken off is wrong.