Reviewed By Alex W (East Orange, NJ) Reviewed for a 2001 Oldsmobile Alero —11/15/2012 12:23 PM
had it professionally installed sound better than i could image dont know about fuel eco cause i gotta heavy foot but couldn't be happier
Reviewed By Chris N (Las Cruces, NM) Reviewed for a 2016 GMC Sierra —6/13/2018 7:53 AM
I installed this by removing everything from the stock muffler back. Installed the series 40 exactly where the original muffler was and had exit pipe turn out just in front of the rear tire. Unless you were in the throttle really hard, you couldnt tell if it was a V8 or the V6.