Reviewed By john f (Stratford, CT) Reviewed for a 2010 Mercury Grand Marquis —12/14/2013 6:34 AM
Did download without any additional changes yet. Performance has increased. Also sounds better. Very easy to do.
Reviewed By Adrian A (EL PASO, TX) Reviewed for a 2011 Ford Mustang —11/24/2015 10:58 AM
This product came promptly and shipped well secured. The instructions were step by step as soon as I plugged in the Tuner. I seldom drive the Mustang since it's my toy, but I did drive it as soon as I put in the Tuner, I can honestly say I saw dramatic horsepower improvement within the 7 miles driven.