Reviewed By douglas e (DOVER, PA) Reviewed for a 2009 Chevy Cobalt —12/21/2012 6:52 AM
Unbelievable power boost with no loss in mpg made the car so much smoother then stock made me love my cobalt ss so much more
Reviewed By Shane P (MOORE, OK) Reviewed for a 2015 Chevy Silverado —6/10/2016 4:39 PM
Worked as advertised. My calculations say my tires are 34". With truck weight they measure about 33.5. That is the number I used and it put GPS spot on. Truck seems to be shifting back into 4 cal mode more regularly now helping to boast mpg. Worth the investment.