If your 2011–2016 LML Duramax is still stock and you want more power, throttle response, and pulling confidence without getting complicated, this Stage 1 Intake & Tuner Kit is the perfect starting point. Pairing the high-flow S&B 75-5075-1D Cold Air Intake with the Edge 85401-201 Evolution CTS3 tuner gives your 6.6L Duramax cleaner airflow, stronger midrange, and selectable dyno-proven tuning you can feel every time you drive. Whether you’re towing, daily driving, or just want the truck to feel more alive, this combo delivers real-world gains while staying emissions compliant and easy to install.
Kit Overview:
Stage 1 intake and tuner bundle for 2011–2016 Chevy/GMC 2500HD/3500HD 6.6L LML Duramax
S&B intake flows 28% better than stock with 99.64% filtration efficiency and a dry extendable filter
Fully enclosed one-piece airbox, secondary air inlet, and silicone couplers (rated to 400°F) help keep intake air cool and consistent
Silicone plug allows you to fine-tune airflow, with MAF calibration designed to prevent check engine lights on stock or tuned trucks
CTS3 adds up to an estimated +120 HP and +200 lb-ft with tunes for towing, daily driving, and performance
5" full-color touchscreen for real-time monitoring, performance testing, data logging, and DTC read/clear
Plug-and-play OBDII installation with Wi-Fi update capability for added features and calibration updates
Both intake and tuner are CARB exempt and 50-state legal when used with intact emissions equipment
Built to deliver safer towing, better throttle control, and smarter power management without emissions deletes
Setup
Estimated HP Gain
Estimated Torque Gain
S&B Intake Only
Up to +15 HP
Up to +25 lb-ft
Edge CTS3 Tuner Only
Up to +120 HP
Up to +200 lb-ft
Intake + CTS3 Combo
Up to +135 HP
Up to +225 lb-ft
You Will Feel The Difference Every Time You Drive
This Stage 1 Power Kit is built to wake up your 2011–2016 LML Duramax with tuned airflow and smart, emissions-safe tuning in one easy package. The S&B 75-5075-1D intake improves airflow by over 28% versus stock using a fully enclosed one-piece airbox, secondary air inlet, and a dry extendable filter that keeps hot engine air and debris at bay, while its MAF calibration and silicone plug give you flexibility without triggering check engine lights. The Edge 85401-201 CTS3 adds dyno-proven gains of up to 120 HP and 200 lb-ft, along with a 5" touchscreen that lets you monitor EGTs, transmission temps, boost, run performance tests, log data, and read or clear trouble codes. Both components are CARB exempt and 50-state legal, so you get safer towing, sharper throttle response, and stronger overall performance without touching emissions equipment or sacrificing reliability.