Alligator Performance Stage 1 Intake & Tuner Power Kit | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

If you want a simple, effective Stage 1 upgrade that gives your 2017–2019 L5P Duramax stronger throttle response, more usable power, and better towing confidence, this intake and tuner combo is a perfect match. Pairing the high-flow S&B 75-5144D Cold Air Intake with the Edge 85401-201 Evolution CTS3 tuner gives your truck cooler, cleaner airflow and dyno-tested tuning you can select right from the cab. Whether you’re towing, daily driving, or just want your Duramax to feel more responsive, this kit delivers real gains you can feel without making the truck hard to live with.

Kit Overview:

• Stage 1 intake and tuner bundle for 2017–2019 Silverado/Sierra 2500HD/3500HD 6.6L L5P Duramax
• Includes S&B 75-5144D cold air intake and Edge 85401-201 CTS3 programmer in one package
• S&B intake flows 47.7% better than stock with a dry extendable filter and fully enclosed airbox to block engine heat
• Dual air inlets, silicone air scoop, and optional box plug help fine-tune airflow, reduce turbo lag, and support lower EGTs
• MAF sensor is properly mapped for tuning support and helps prevent check engine lights when used with proper calibration
• CTS3 offers estimated gains of up to +120 HP and +200 lb-ft with multiple preloaded power levels for towing, daily driving, or performance
• 5-inch full-color touchscreen provides real-time monitoring, customizable digital gauges, performance testing, and data logging
• Simple plug-and-play OBDII installation with Wi-Fi update capability for the latest features and calibrations
• CTS3 is 50-state legal with CARB EO D-802-13, while the S&B intake is emissions compliant outside of California
• Designed to improve throttle response, drivability, and pulling power while keeping factory emissions equipment intact

Engineered Performance That Brings Your Duramax To Life

This Stage 1 Power Kit combines efficient airflow and proven tuning to wake up your 2017–2019 L5P without making it complicated. The S&B 75-5144D intake improves airflow by nearly 48% over stock and uses a fully enclosed airbox, dual inlets, and a dry extendable filter to keep heat and debris out while feeding the turbo cooler, denser air. Its integrated silicone scoop and optional box plug let you tailor airflow, helping cut turbo lag and support lower EGTs under load. The Edge 85401-201 CTS3 adds dyno-tested power gains of up to 120 HP and 200 lb-ft, with multiple tunes for towing, daily driving, or maximum performance, all controlled through a sharp 5-inch touchscreen that handles monitoring, performance testing, data logging, and diagnostics. Together, they deliver a cleaner, stronger, and more responsive driving experience while keeping emissions equipment in place and compliance front and center.

Fitment: 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• S&B intake is not legal for sale in California.
• Edge CTS3 tuner is 50-state legal with CARB EO #D-802-13.
• CTS3 tuner does not support the removal of emissions equipment.
• Cold air intake includes dual inlet options with removable plug.
• Properly mapped MAF sensor helps avoid check engine lights.
• CTS3 provides real-time engine monitoring and data logging.
• CTS3 installs easily via the OBDII port with no hard wiring required.
• Multiple power levels available for towing, daily driving, and performance.
• S&B intake may not ship to restricted states due to emissions regulations.
• Prop 65 warning label.
• Combo is engineered for use with factory calibration or mild tuning.