Reviewed By Torrey S (Mesa, AZ) Reviewed for a 2007 Mercury Grand Marquis —12/23/2015 6:46 PM
mufflers are great, perfect fit and finish, installed on a police P71 exhaust nice rumble but not to loud and better MPG, win win
Reviewed By Jason H (Carrollton, TX) Reviewed for a 1988 Mercury Grand Marquis —6/9/2009 8:42 PM
But not high flow. They allow a little better flow than the original converters, but not much more. They do sound better though. If I can get true duals on my car, they may work even better and the y pipe may be the main issue I'm having. Installation was a cake walk. Getting the old ones off was a pain, but these went on very easily. Would have been better if they matched up to the OE air injection without modification, but that's not a big deal.
Reviewed By Paul B (Waukesha, WI) Reviewed for a 2015 Ford F-150 —8/23/2016 7:24 PM
It's a bit noisy at first until the muffler settles in but now she hums. It's not too loud on the highway either and there is no drone effect like the Flowmaster's. 70-75 MPH seems to be the sweet spot!!! Great American made product!!