PPEI Optional Engine Calibration Only PP-L5P&D-ET | 2017-2023 Duramax 6.6L L5P, L5D

PPEI Speed Limiter & Fuel System Compatibility Calibration for L5P & L5D Duramax (CARB EO Pending)

Optimize Response & Compatibility

PPEI’s specialized calibration is designed for customers seeking to disable the factory speed limiter and improve throttle response sensitivity without adding extra power. This tune also provides the proper adjustments required for trucks equipped with aftermarket fuel systems such as FASS Fuel Systems, ensuring full compatibility and seamless operation.

Key Features

• CARB EO Pending – engineered for emissions-compliant functionality
• Removes or raises factory speed limiter
• Enhances throttle response for smoother acceleration
• Ensures calibration compatibility with aftermarket fuel systems
• No horsepower or torque increase – maintains stock power output

Application

This PPEI calibration is compatible with both L5P and L5D Duramax vehicles.

Important Note

This calibration does not include any performance or power enhancements. For customers seeking increased horsepower and torque, please see our PPEI Performance Calibration for L5P/L5D (Base Price: $799).