Superchips' Flashpaq (No. 2825) and Cortex (No. 2950) performance programmers offer coverage on 2008 GM 5.3L vehicles, also including the 2006-2008 Chevy Impala SS, Chevy Monte Carlo SS, Pontiac Grand Prix GXP and 2008 Buick LaCrosse Super. Users will see 3/10 of a second improvement in 0-60 times with up to 15 WHP and 14 ft./lbs. torque. Users will enjoy advanced features like modifying the speed governor and RPM limiter.