Reviewed By RICHARD J (Parachute, CO) Reviewed for a
—7/13/2014 9:25 PM
Big difference in power. I get 3 to 4 mpg more when using performance level.
Reviewed By Scott S (FRESNO, CA) Reviewed for a
—1/19/2015 9:38 AM
Noticeable increase in HP and firmer shifting at higher RPMs.
Lost MPG in city & HWY which was disappointing.
'14 Silverado w 6.2L
Reviewed By Donald P (Junction City, KS) Reviewed for a
—7/4/2014 9:05 PM
Product came fast and worked great. I would always prefer autoanythjng over its competitors.