PPEI Allison Transmission Tuning PP-A50-TT | 2011-2015 Duramax A50 6.6L LML

PPEI Transmission Tuning – Extend Transmission Life & Boost Fuel Economy

Extend your transmission life and increase your fuel economy with PPEI Transmission Tuning! A must-have for tuned trucks with additional torque and upgraded performance. PPEI was the first to offer transmission tuning for these new Allisons — and we haven’t let off the throttle since!

Refined Shift Points

Say goodbye to the low-RPM “lazy” feel that forces you to stab the throttle for a downshift — not cool and a fuel economy killer. PPEI’s refined shift strategy smooths power delivery and enhances drivability. For vehicles equipped with larger turbochargers, this tuning is essential to keep the engine in the proper RPM range to match the new torque curve.

Optimized Torque Converter Lockup

PPEI Transmission Tuning refines torque converter lockup to deliver power to the ground more efficiently. This eliminates unnecessary slip, improves fuel economy, and reduces heat in typical “unlocked” conditions for a smoother, cooler-running drivetrain.

Increased Line Pressure for Maximum Holding Power

Perhaps the greatest benefit — increased line pressure! By boosting line pressure, PPEI increases the holding capacity of the transmission, clamping clutch packs together with more force. This provides the strength and confidence tuned trucks and heavy towers need for long-term durability and performance.

Custom Fit Calibration

PPEI takes pride in its work. If there’s anything you’d like changed in your transmission calibration, PPEI will make it fit your driving style — “Custom Fit!”

Installation Compatibility

This tuning package can be installed using the following supported hardware:

• EFILive AutoCal V2 / V3
• EFILive FlashScan V2
• PPEI RTD
• HP Tuners MPVI2
• EZ LYNK AutoAgent 2

Why PPEI Transmission Tuning?

• Extend transmission life with higher holding capacity
• Improve fuel economy and reduce converter heat
• Eliminate lazy downshifts and improve drivability
• Customizable calibration tailored to your setup

PPEI Transmission Tuning is the ultimate upgrade for trucks running additional torque or towing heavy. Whether you’re daily driving, towing, or running performance mods, this tuning ensures your transmission performs efficiently, reliably, and exactly how it should.