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Here is quick video on how I upgraded my Electronic Pressure Control (EPC) solenoid or a EPC Fooler plug.
The Factory LML/L5P Allison transmission runs at 80PSI of line pressure. On shifts the solenoid will spike the line pressure to 230PSI and then kick it back down to 80PSI after the shift has been made. (not enough to hold any addition horsepower) The Deviant Race Parts EPC fooler will make the transmission run at a static pressure of 230PSI and will increase to 280PSI off idle also eliminating pressure drop on shifts.
This allows much more clamping force to the clutch packs in turn holding more horse power and greatly improving shift quality and longevity of the transmission. Sorry in advance for the wind noise. I live in Oklahoma. if you have questions let me know.
Amazon:
www.amazon.com/gp/product/B07...
Deviant Race Parts:
www.deviantraceparts.com/Devia...