Stage 1 Intake & Tuner Power Kit

If you’re looking to wake up your 2020–2023 L5P Duramax with a clean, emissions-conscious Stage 1 setup, this intake and tuner combo delivers power you can really feel without making ownership complicated. Pairing the high-flow S&B 75-5136D Cold Air Intake with the Edge 85400-261 Evolution CTS3 tuner gives your truck smoother airflow, sharper throttle response, and serious gains in torque and drivability. Whether you’re towing, daily driving, or just want a more responsive truck, this combo brings modern control and real-world performance into one simple package.

Kit Overview:

• Stage 1 intake and tuner bundle for 2020–2023 Silverado/Sierra 2500HD/3500HD 6.6L L5P Duramax
• Includes S&B 75-5136D cold air intake and Edge 85400-261 CTS3 tuner in one package
• S&B intake flows over 48% better than stock with a dry extendable filter and fully enclosed airbox to reduce engine heat
• Triple-inlet design, optional box plug, and high-temp silicone components improve airflow efficiency and throttle response
• MAF housing is mapped for proper sensor function to help avoid check engine lights while protecting the engine from dust and debris
• CTS3 delivers estimated gains of up to +125 HP and +275 lb-ft with multiple power levels for towing, daily driving, and performance
• Includes ECM and TCM unlock tool to enable flash tuning and 10-speed transmission support directly through the OBD-II port
• 5-inch high-resolution touchscreen provides real-time monitoring, regen status tracking, performance logging, and diagnostics
• Calibrates tire size and speedometer while offering throttle boost control to fine-tune pedal sensitivity
• Designed as an EPA-compliant solution when used with intact factory emissions equipment (not CARB legal)

Unlock Stronger, Smarter Power For Your L5P

This Stage 1 Power Kit is built to make your 2020–2023 L5P Duramax feel stronger, cleaner, and more responsive in every situation. The S&B 75-5136D intake cuts restriction by over 48% compared to stock, using a fully enclosed airbox, snap-in lid, and triple-inlet design to keep airflow cool, consistent, and protected from engine bay heat and debris. High-temp silicone components and a precision-mapped MAF housing help maintain sensor accuracy and avoid nuisance check engine lights, even under heavy loads or long towing days. On the tuning side, the Edge 85400-261 CTS3 unlocks up to 125 horsepower and 275 lb-ft of torque with EPA-compliant flash tuning, supported by the included ECM/TCM unlock tool. You get control over throttle feel, tire size and speedometer calibration, plus detailed monitoring of regen status, soot levels, and key engine parameters on a crisp 5-inch touchscreen. Together, this intake and tuner combination gives your L5P the airflow and calibration it needs to tow harder, accelerate quicker, and drive smoother, without giving up reliability or emissions-system integrity.

Fitment: 2020, 2021, 2022, 2023 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• S&B intake is not currently CARB legal and cannot be sold or shipped to California.
• Edge CTS3 requires ECM/TCM unlock via the included Edge Locksmith device.
• ECM unlock is permanent and cannot be reversed once completed.
• CTS3 supports tuning for both 10-speed and 6-speed transmissions where applicable.
• Factory emissions equipment must remain installed and functional for legal on-road use.
• Initial setup requires a PC and Edge Update Agent software for tuning updates.
• CTS3 includes advanced diagnostics, data logging, and real-time monitoring tools.
• Airbox plug is included to tailor airflow based on driving conditions or preference.
• Prop 65 warning label applies.
• Package is engineered for use with intact emissions systems and sensible performance use.