2017-2023 Duramax MPVI2/MPVI3 Tuning Revision Upgrade

Fits

Note: This is an UPDATE to existing CCS L5P Tune Files only! You need to have previously purchased CCS L5P Tuning and will require an HP Tuners MPVI device to flash the updated tunes onto your truck. 

IMPORTANT - INFO LOG file uploads are REQUIRED, if you do not attach it to your order, please email it to tunes@dirtydieselcustoms.com along with your order number for reference.

Looking to update your L5P MPVI Custom Tuning to accommodate for all those new modifications? Or maybe you just want to get some more power (who wouldn't?). Either way, this L5P Custom Tuning Revision will do precisely that and more! Please note, this is an update only and only works for existing customers looking to update their current tuning.

1. Choose your current tuner from the list above
2. Enter your VIN number
3. Enter all of your modifications in the "*MODS" script box (the tunes will be written according to what is inputted in this script box, so the more information the better!).
4. Give us your money
5. You'll receive your updated tune file via email in approximately 1-3 business days (processing time can vary depending on how busy the tuner is)
6. Flash the new tunes onto your rig
7. You're now ready to party with your new mods