Upgrade your truck's transmission tune in order to support added power from an ECM tune, and improve shift points and performance.
You must send your stock TCM file read to sales@dieselpartdeals.com after ordering and include your order #. Please also send us your MPVI3 serial # when sending your stock file.
Product Notes:
- An HPtuners MPVI2/3/4, and 4 HPTuners credits are required to flash the 2017-2019 L5P TCM. Unlocking the TCM is no longer required!
- Perform a read on the TCM ONLY (do not include both ECM and TCM together in the read) and send us the stock file.
- You must ALWAYS use the latest HPTuners BETA software and resync your MPVI device (HPtuners VCM Editor BETA -> help->resync) , download the latest BETA here