Reviewed By William M (Fair Oaks, CA) Reviewed for a 2014 Cadillac CTS —8/18/2015 10:30 PM
Immense improvement in performance on initial tune. I am really quite pleased.
Reviewed By Steven P (Crest Hill, IL) Reviewed for a 2011 Ford F-350 —4/28/2016 6:22 AM
Works very well saw increase in horsepower and small increase in mpg. One fault the unit does not auto shutoff when engine is shut down. Believe this good be a theft problem but will see.