Optimum fuel tuning for awesome power, built-in safety and adjust-on-the-fly power, plus temperature limiting control w/optional Temp Limit Kit.
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. Every Banks Tuner comes standard with our exclusive AutoRate® and ActiveSafety® engine and transmission safeguards. Designed to protect your vehicle's drivetrain and keep your truck running strong. As a result, Banks Six-Gun destroys the competition, NOT your truck!
Proof of a higher power.
Stacked for Power® and calibrated for sport applications, Six-Gun is a performance junkie that adds +102 hp/+275 lb-ft. With its CleanTune® Technology and change-on-the-fly power, Six-Gun rockets you from 0-60 mph 21% quicker and 148 feet ahead of stock ... without adding soot!
All gains measured at the rear wheels, with recommended airflow improvements.
For best Six-Gun Tuner performance, Banks always recommends airflow improvements.
- Horsepower gains up to +102 and +275 lb-ft torque at rear wheels
- ActiveSafety and AutoRate protects engine/powertrain
- Destroys the competition, not your vehicle!
- 6 change-on-the-fly power levels
- 0-60 mph in 29% less distance!
- Loaded with Features
- Value Priced
- Easy Install
Emissions Compliant: D-161-93


Six-Gun, Level 6 | Stock | Banks | Improvement | Results |
---|---|---|---|---|
Rear-wheel Horsepower: Best gain |
229 hp |
331 hp |
+102 hp |
45% more |
Rear-wheel Torque: Best gain |
445 lb-ft |
720 lb-ft @2000 rpm |
+275 lb-ft | 62% more |
Rear-wheel Horsepower: Peak-to-peak | 246 hp @3000 rpm |
346 hp @3000 rpm |
+100 hp | 41% more |
Rear-wheel Torque: Peak-to-peak | 449 lb-ft @1800 rpm |
720 lb-ft @2000 rpm |
+271 lb-ft | 60% more |
Acceleration, time: 1/8 mile | 11.49 secs | 10.66 secs | -0.83 secs | 7% quicker |
Acceleration, speed: 1/8 mile | 64.3 mph | 73.3 mph | +9.0 mph | 14% faster |
Acceleration, time: 1/4 mile | 17.53 secs | 16.06 secs | -1.47 secs | 8% quicker |
Acceleration, speed: 1/4 mile | 80.6 mph | 91.2 mph | +10.6 mph | 13% faster |
Acceleration, time: 0-60 mph | 10.18 secs | 8.00 secs | -2.18 secs | 21% quicker |
Acceleration, distance: 0-60 mph | 511 feet | 363 feet | -148 feet | 29% shorter |
Test vehicle: 2004 Chevrolet Silverado 2500, crew cab, long bed, single rear wheel.
Engine: Duramax 6.6L LLY.
Transmission: Allison 5-speed automatic.
Horsepower and torque measured at rear wheels.
Engine differences in 2004 vehicles: Early 2004 vehicles LB7 engine (8th VIN digit - 1) Late 2004 vehicles LLY engine (8th VIN digit - 2)
Upgradeable options include Banks iDash and airflow components to build a complete engineered power system.