Fits: 2020 thru 2022 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel

*THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT IS NOT LEGAL IN CALIFORNIA.*

The 2020-2022 Chevy/GMC Duramax 6.6L Derringer is a high-performance, OBD-II connected tuner that adds a whopping +117 hp / 225 hp. With intelligent power monitoring of boost, RPM, speed, gear, EGT, and coolant temperature, AutoRate® ensures optimal power output. Activesafety® hardware provides self-monitoring and protects the engine, preventing the notorious "reduced engine power" issue caused by other tuners. Additionally, Transcommand® delivers intelligent power to prevent slippage and ensure seamless shifting, keeping the transmission safe and sound.

Features: 

• 6 power levels

• adjustable on-the-fly

• gain of +117 hp

• increase of +225 lb-ft of torque

• 10% cooler EGTs than Pulsar

• 10% leaner than Pulsar at its peak power, resulting in 6% better fuel economy

• Active Safety® health monitoring circuitry

• Update Derringer firmware, calibration through iDash via Bluetooth

Options: 

• The Banks Derringer Tuner, available with or without data monitoring through iDash Pro, offers unrivaled power and performance. This sleek microcomputer serves as a Powertrain Information Center, providing real-time monitoring and control of your vehicle's functions.

Installation: 

• For Single Alternator 2020-2022 Duramax L5P

• For Dual Alternator 2020-2022 Duramax L5P

DmaxStore Notes: 

• To maintain peak performance, EGT must be monitored and kept below 1550°F to avoid engine derate