Six-Gun delivers pavement-shredding power. Has 6 change-on-the-fly power levels and is Stacked for Power. Enhanced vehicle monitoring and data-logging with iDash DataMonster, SuperGauge or Switch. Comes standard with exclusive AutoRate and ActiveSafety engine and transmission safeguards. Tuning that doesnt 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 and AutoRate safeguards to Six-Gun so it wont exceed those limits. Has 6 change-on-the-fly power levels. Is Stacked for Power to tune timing and fuel pressure. 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 28% quicker and in 31% less distance than stock ... without adding black smoke! Banks iDash 1.8 DataMonster is packed full of awesome! Use it for total control of your Six-Gun Tuner. Achieve best gains with a touch of your finger. Set and monitor EGT, coolant temps and a vast array of other engine parameters. Data-log up to 100 parameters and review on your iDash DataMonster or export to view on your computer. With enhanced vehicle monitoring and diagnostic Read/Clear capabilities, you will wonder how you lived without the iDash DataMonster your whole life! Engine differences in 2004 vehicles: Early 2004 vehicles - LB7 engine (8th VIN digit - 1). Late 2004 vehicles - LLY engine (8th VIN digit - 2). US Patent # 7,593,808 B2 and # 7,254,477 B1