COMPATIBLE WITH TOYOTA TUNDRA (2003-2006): Fits 1st Gen Base, SR5 & Limited. This Pedal Commander throttle response controller optimizes 3.4L/4.0L V6 & 4.7L V8 engines. It reduces delay for superior merging, towing, and off-road driving. CUSTOM THROTTLE RESPONSE CONTROL: Instantly reduce lag and make your engine roar with 4 dynamic modes (Eco, City, Sport, Sport+). This device offers 36 settings to refine sensitivity for a personalized, powerful, and responsive driving experience. SIMPLE PLUG & PLAY INSTALL: Install this throttle response controller in about 15 minutes without special tools or permanent changes. The design is fully reversible and leaves no trace on your vehicle's computer. APP CONTROL & SECURITY: Wirelessly manage all controls and settings via the free Pedal Commander app. Enhance vehicle security by locking the gas pedal entirely through the subscription-based Anti-Theft feature. FULL ECU COMPATIBILITY: This upgrade will not alter the ECU or leave a trace on your vehicle's computer. It keeps the system completely original and works seamlessly with other car accessories like cold-air intakes and heavy-duty exhaust systems. The Pedal Commander is a throttle response controller designed to adjust the sensitivity of your vehicle's gas pedal. Unlike older vehicles with mechanical throttle cables that offered instantaneous response, modern vehicles with electronic throttle control (drive-by-wire) are governed by the vehicle's computer, which can sometimes result in a delay. The Pedal Commander connects to your vehicle's throttle position sensor to alter the signal timing, allowing you to manually adjust the responsiveness. It offers 4 distinct modes and 36 sensitivity levels to suit different driving conditions. The unit is designed for a simple plug-and-play installation and does not require professional tools or permanent modifications to the vehicle.