Reviewed By troy h (Morristown, TN) Reviewed for a 2009 Mercury Grand Marquis —7/18/2012 4:49 AM
My gas mileage has increased 3 miles per gallon. Notable increase in engine performance.
Reviewed By William B (Spencer, NY) Reviewed for a 2005 Mercury Grand Marquis —11/13/2017 12:04 PM
The system fit well after some minor mods -- Hood hit on the shroud -- Had to remove system and trim the top edge so the hood closed properly. Overall the system looks good and performs great!