LML Transmission Tuning
DISCLAIMER: If your trans is already hurt - it needs to be built. We also can not guarantee that you will not blow your trans... ANYTHING can be broken and stock components still fail!
PPEI TCM TUNING FOR A50- KEEP YOUR TRANS LIVING LONGER!
The A50 Allison follows a pre-determined torque model in which all factory LML Duramax’s follow. As throttle input and load increases, so does the calculated torque the TCM estimates. Following this estimated torque amount, is line pressure. Line pressure in factory form is PERFECT for a factory tuned engine, however, once torque is increased with tuning… The predetermined torque model is higher than what the transmission estimates and results is lower-than-needed Line PSI. With PPEI TCM TUNING, we increase the line PSI to a torque model like it would have come with from factory – Which gives the transmission the line pressure it needs for the torque increase of the tuning.
Transmission tune types:
**Street TCM Tune- We recommend this for trucks up to 550hp. It has a moderate Line PSI slope which will model a torque curve 50% above stock. The line PSI is modified in such a way that the truck will still retain good mileage, yet hold high line psi (Close to 300psi under full load) following this torque curve.
**Race TCM Tune- We recommend this for trucks in the 550-650hp range. It has a aggressive Line PSI slope which will model a torque curve 100% above stock. The line PSI is modified in such a way that the truck will still retain good mileage, yet hold high line psi (Close to 300psi under full load) following this torque curve. Line PSI is increased higher across the board, so as a result, mileage may be a little lower in some cases.
Instructions for install:
1.Verify your LML indeed has a A50 (2011-2014 and some 2015’s) and not a T87 (2015.5 T87)
2.Read out stock A50 file using your AutoCal or V2 before installing PPEI transmission file.
3.Full Flash in PPEI trans file of choice (a50)
|Chevy/GMC||Duramax||6.6||2011 - 2015|