Description: These custom tune files are a perfect fit for 2019 - 2021 Dodge Ram HD trucks with a 6.7L Cummins engine. Note that this product only includes the tune files. If you need the EFI - Live Device, click here. TCM Tuning is included. The EFI Live offers a cost - effective yet high - quality tuning solution. It lets you open and upgrade the OE ECU and TCM in your Cummins. With GDP tuning, you can choose Single, Multi - Tune, or SOTF for safe and reliable power in your diesel pick - up. Part Number: GDP680006. Features: CSP5 Option only, written specifically for your truck, requires an AutoCal Device, and works with emissions on or off. Tuning allows you to modify engine and transmission parameters, mainly for better fuel economy and increased power. The 5 Tune option gives you the flexibility to adjust power according to your usage. Different power levels from 30 HP to 150 - 180 HP can be requested. To purchase an EFI Live Vin License, you need the device serial number and authorization codes. If your Autocal was previously linked to another tune provider, unlink it first. Installation steps include downloading the latest EFILive V8, updating the AutoCal firmware, and providing your AutoCal serial number, auth code, and VIN number.

Using these custom tune files is a great way to enhance your truck's performance. First, if you already have existing tuning on your truck, reach out to your previous tuner to get the AutoCal Unlink Codes and follow their instructions. Then, download the most recent version of EFILive V8 and run a firmware update on your AutoCal Device. Make sure to provide us with your AutoCal Serial Number, Auth Code, and VIN Number. You can find the Serial Number and AuthCode by going to F7 Licences - F3 Vins. There are two important things to note. One, this product only comes with the tune files. If you need the EFI - Live Device, you'll have to click the link provided. Two, if your AutoCal has been used by another tuning company before, you must unlink it from that company before adding the new tuning. As for maintenance, keep your AutoCal Device updated with the latest firmware to ensure the best performance. And if you want to change power levels, just use the 5 Tune option according to your driving needs, like turning up the power when your truck is empty and turning it down when towing a trailer.