Optimum fuel tuning for awesome power (+127 hp, +345 lb-ft), built-in safety and adjust-on-the-fly power, plus temperature limiting control. Tuning that doesn't kill the host vehicle. Many tuners reduce fuel delivery as exhaust gas temps rise. But they ignore the powertrain! Banks finds the limits of the engine and powertrain, then adds mission-critical ActiveSafety safeguards to Six-Gun so it won't exceed those limits. As a result, Six-Gun thrashes challengers, not your truck! Proof of a higher power. Calibrated for sport applications, Six-Gun is a performance junkie that adds +127 hp/+345 lb-ft. With its comprehensive CleanTune Technology and change-on-the-fly power, Six-Gun rockets you from 0-60 mph 33 percent quicker and in 36 percent less distance than stock - without adding Black smoke! All gains measured at the rear wheels, with recommended airflow improvements. Test Results Chevy/GMC Truck Power Turbo-diesel: 6.6L Duramax LB7, 2001-2004. Test vehicle: 2001 Chevy 3500HD, Extended Cab, Long Bed. Engine: 6.6L Duramax LB7. Transmission: Allison Series 1000 5-speed automatic. Horsepower and torque measured at rear wheels. Note: Banks Horsepower and Torque tests performed with recommended airflow improvements. Upgradeable options include Banks iQ and airflow components to build a complete engineered power system. For best Six-Gun Tuner performance, Banks always recommends airflow improvements.
Gain up to +127 hp/+345lb-ft at rear wheels 0-60 mph in 1/3 less distance! Six-Gun diesel tuner with switch Temperature limiting control w/opt Temp Limit Kit 63077 Emissions compliant: CARB EO D-161-93 (PN 62816)
Fits 2001-04 Chevy 6.6L LB7

Fitment:
Chevrolet Silverado 2500 Base 2001
Chevrolet Silverado 2500 Base 2002
Chevrolet Silverado 2500 Base 2003
Chevrolet Silverado 2500 Base 2004
Chevrolet Silverado 2500 LS 2001
Chevrolet Silverado 2500 LS 2002
Chevrolet Silverado 2500 LS 2003
Chevrolet Silverado 2500 LS 2004
Chevrolet Silverado 2500 LT 2001
Chevrolet Silverado 2500 LT 2002
Chevrolet Silverado 2500 LT 2003
Chevrolet Silverado 2500 LT 2004
Chevrolet Silverado 2500 WT 2004
Chevrolet Silverado 2500 HD Base 2001
Chevrolet Silverado 2500 HD Base 2002
Chevrolet Silverado 2500 HD Base 2003
Chevrolet Silverado 2500 HD Base 2004
Chevrolet Silverado 2500 HD LS 2001
Chevrolet Silverado 2500 HD LS 2002
Chevrolet Silverado 2500 HD LS 2003
Chevrolet Silverado 2500 HD LS 2004
Chevrolet Silverado 2500 HD LT 2001
Chevrolet Silverado 2500 HD LT 2002
Chevrolet Silverado 2500 HD LT 2003
Chevrolet Silverado 2500 HD LT 2004
Chevrolet Silverado 2500 HD WT 2004
Chevrolet Silverado 3500 Base 2001
Chevrolet Silverado 3500 Base 2002
Chevrolet Silverado 3500 Base 2003
Chevrolet Silverado 3500 Base 2004
Chevrolet Silverado 3500 LS 2001
Chevrolet Silverado 3500 LS 2002
Chevrolet Silverado 3500 LS 2003
Chevrolet Silverado 3500 LS 2004
Chevrolet Silverado 3500 LT 2001
Chevrolet Silverado 3500 LT 2002
Chevrolet Silverado 3500 LT 2003
Chevrolet Silverado 3500 LT 2004
Chevrolet Silverado 3500 WT 2004
Dodge Ram 2500 Laramie 2006
Dodge Ram 2500 Laramie 2007
Dodge Ram 2500 SLT 2006
Dodge Ram 2500 SLT 2007
Dodge Ram 2500 Sport 2006
Dodge Ram 2500 Sport 2007
Dodge Ram 2500 ST 2006
Dodge Ram 2500 ST 2007
Dodge Ram 2500 TRX4 2006
Dodge Ram 2500 TRX4 2007
Dodge Ram 3500 Laramie 2006
Dodge Ram 3500 Laramie 2007
Dodge Ram 3500 SLT 2006
Dodge Ram 3500 SLT 2007
Dodge Ram 3500 Sport 2006
Dodge Ram 3500 Sport 2007
Dodge Ram 3500 ST 2006
Dodge Ram 3500 ST 2007
Dodge Ram 3500 TRX4 2007
GMC Sierra 2500 Base 2002
GMC Sierra 2500 Base 2003
GMC Sierra 2500 Base 2004
GMC Sierra 2500 SL 2001
GMC Sierra 2500 SL 2002
GMC Sierra 2500 SLE 2001
GMC Sierra 2500 SLE 2002
GMC Sierra 2500 SLE 2003
GMC Sierra 2500 SLE 2004
GMC Sierra 2500 SLT 2001
GMC Sierra 2500 SLT 2002
GMC Sierra 2500 SLT 2003
GMC Sierra 2500 SLT 2004
GMC Sierra 2500 WT 2003
GMC Sierra 2500 WT 2004
GMC Sierra 2500 HD Base 2002
GMC Sierra 2500 HD Base 2003
GMC Sierra 2500 HD Base 2004
GMC Sierra 2500 HD SL 2001
GMC Sierra 2500 HD SL 2002
GMC Sierra 2500 HD SLE 2001
GMC Sierra 2500 HD SLE 2002
GMC Sierra 2500 HD SLE 2003
GMC Sierra 2500 HD SLE 2004
GMC Sierra 2500 HD SLT 2001
GMC Sierra 2500 HD SLT 2002
GMC Sierra 2500 HD SLT 2003
GMC Sierra 2500 HD SLT 2004
GMC Sierra 2500 HD WT 2003
GMC Sierra 2500 HD WT 2004
GMC Sierra 3500 Base 2002
GMC Sierra 3500 Base 2003
GMC Sierra 3500 Base 2004
GMC Sierra 3500 SL 2001
GMC Sierra 3500 SL 2002
GMC Sierra 3500 SLE 2001
GMC Sierra 3500 SLE 2002
GMC Sierra 3500 SLE 2003
GMC Sierra 3500 SLE 2004
GMC Sierra 3500 SLT 2001
GMC Sierra 3500 SLT 2002
GMC Sierra 3500 SLT 2003
GMC Sierra 3500 SLT 2004
GMC Sierra 3500 WT 2004