Description: This product fits 2017 - 2023 GMC/Chevrolet HD L5P with a 6.6L Duramax engine. Important: You must order a CAN Plug for your year range. Each option includes an MPVI3 Device and 8 Credits. If you want custom tuning for your Duramax, choose us. We'll write tunes according to your upgrades and preferences. Part Number: GDP403CS / GDP403CS - NOCOMP. Features: Single Tune, SOTF, or Multi - Tune options. Tunes are written specifically for your truck. You can choose Emissions On or Off. 4 credits are enough to flash your ECM & TCM. Tuning: Custom tuning allows you to modify engine and transmission parameters. The main reason for tuning is better fuel economy. By changing the burn rate and removing EGR gases, you can get more energy from fuel, increasing mileage and power. SOTF Tuning: You can use the Cruise Control Method via the steering wheel. If you prefer a manual toggle switch, select the add - on. Power Levels: Different power levels from 0 HP to 180 HP can be written based on your request and vehicle modifications. Notes: If you send in your ECM, send it to Unit 6 - 1060 Stevens Road, West Kelowna, BC Canada V1Z1A3. Installation: Click here to view MPVI Tuning instructions and L5P ECM Unlock Methods.

Using this Duramax MPVI3 with GDP Custom Tuning is a great way to improve your truck's performance. First, make sure to order the CAN Plug that matches your truck's year range. The product comes with an MPVI3 Device and 8 credits. When you want custom tuning, tell us about your truck's upgrades and preferences. We'll create tunes that fit your specific truck. For SOTF tuning, you can use the cruise control method on your steering wheel by default. If you'd rather have a manual toggle switch, add it when you order. Different power levels are available, and we can write tunes according to your needs and your truck's modifications. When it comes to maintenance, keep your MPVI3 device clean and store it in a dry place. If you choose to send in your ECM for tuning, send it to the provided address in Canada. And don't forget to follow the MPVI Tuning instructions and L5P ECM Unlock Methods for a smooth installation.