LML TCM Tuning


Our TCM Tuning is highly recommended for all T87 & A50 controllers. It has an aggressive Line PSI slope which will model a torque curve 100% above stock. The Line PSI is modified to retain mileage but may result in a small decrease fuel efficiency.

SKU: EZ-LML-TCM Category: Tag:

LML TCM Tuning Description

The T87 & A50 Allison follows a pre-determined torque model in which all factory LMLs 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 resulting in a 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 giving the transmission the line pressure it needs for the torque increase.


  • Earlier Converter Lockup
  • Increased Line Pressure
  • New Shift Strategy to Keep from Lugging
  • Easier Downshift with Less Throttle Input
  • Tailored Torque Management

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