Sierra 3500 HD

Optimum fuel tuning for awesome sport/street power (+120 hp, +210 lb-ft), built-in safety and adjust-on-the-fly power, plus CleanTune Technology. Calibrated for sport applications, Six-Gun delivers pavement-shredding power with CleanTune technology,...

Put the finishing touch on your lifted vehicle with Rough Countrys Speedometer Calibration Device! This easy-to-use Speedometer Calibrator helps you quickly and easily reprogram your vehicles speedometer to match the output of your larger tires. Your...

When your vehicle's throttle isn't what you need, it's time for a boost with the Bully Dog Thruster. This device is easy to install inline between your vehicle's pedal position sensor and the vehicle harness. Adjust on the fly and really feel the change...

When your vehicle's throttle isn't what you need, it's time for a boost with the Bully Dog Thruster. This device is easy to install inline between your vehicle's pedal position sensor and the vehicle harness. Adjust on the fly and really feel the change...

GT POD ADAPTER NOW INCLUDED WITH THIS PILLAR POD. The custom A-Pillar mounting system is the cleanest and most convenient install for your device. Installation is a snap. They are made to make your unit easy to access, without obstructing the drivers...

Advanced tuning for work and towing adds loads of power with built-in safety, adjust-on-the-fly power, and CleanTune Technology. PowerPack calibration: +100 hp/+239 lb-ft. Calibrated for working and towing, EconoMind is a fully engineered diesel tuner...

The Trinity 2 Ex Is Hands Down, The Most Feature-Packed Performance Tuner, Monitor, Diagnostic And Data Logging Device On The Planet. The T2 Has No Peer In Terms Of Wide Vehicle Coverage, 50 State Compliant Tuning, Custom Tuning Capability,...

Our GT Platinum Diesel Tuner is our top-selling product - and for good reason. The GT Platinum Diesel is four products in one remarkable unit: a vehicle engine tuner, monitor, gauge, and diagnostic device all in a single unit. The remarkable GT...

The Flashcal for Truck and Amp'd 2.0 Throttle Sensitivity Booster kit for gas trucks offers quick, meaningful, and market-leading features that consumers love. Adjust for aftermarket tire and gear adjustments with Flashcal and then wake up that laggy gas...

Bring your vehicle to life with PedalMonster. City, Sport, Track with 30 levels of control. The only OBD-II connected throttle sensitivity controller. Adjustable low-speed trim, reverse safety, and ActiveSafety circuitry included! PedalMonster stacks...

Pedal Commander is a throttle response controller. It removes response delays on your electronic accelerator pedal. Effectively, it allows your engine to respond faster. As a result, your car can accelerate faster. You paid lots of money for your car,...

The GM Flashpaq performance programmer includes tunes engineered with the daily driver, heavy tower, and enthusiast in mind. With various power levels from performance, tow, to economy, the Flashpaq tuner for GM sends instant power to your gas Chevy...