Pressure Calibration Kit (800HP+) GM 2011-2016 Allison 1000 and 2000 Series
This Kit is recommended for performance-enhanced trucks.
Designed to improve shift firmness with variable spring selections to achieve your desired results.
The PPE Pressure Calibration Kit sets minimum pressure and boosted pressure levels (adjustable) that are a match for 800HP+ applications.
Installation Guide: Pressure Calibration Kit GM Allison 1000 and 2000 Series 2011-2016 450HP-800HP