SCT X4 tuner 2011 Sierra 6.2L
Noticeable HP & torque gains with 93 octane stock tune Increase MPG from 12.3mpg to 17.5mpg highway Would recommend to anyone Mods- Gibson shorty headers, Brisk USA LGS spark plugs, Granatelli wires, custom header back exhaust, Flowmaster super 10 muffler, K&N Blackhawk CAI, and SCT Tuner with custom tune Next on the wish list is a supercharger or pro charger Little pricey but worth the $$ Can't go wrong with SCT
Great product love my GT. I hav notice 4-5 mpg improvement also hav notice more horsepower an torque. I hav bullydog cold air intake,Gibson shorty headers, and exhaust system with flowmaster 10 series muffler!! I recommend this product to anybody looking for fuel improvement or to get more power out of their truck..