PPEI Engine Tuning PP-L5D-ET | 2017-2023 Duramax 6.6L L5D

PPEI Engine Calibration for 2017–2023 L5P Duramax (CARB EO Pending)

Unlock Real Power & Efficiency

PPEI’s L5P Duramax tuning delivers up to +145 HP and a massive increase in torque — transforming how your truck drives, tows, and responds. Designed for optimal balance between performance and reliability, PPEI’s calibration improves throttle response, acceleration, and overall efficiency for both work and play.

Key Benefits

• Gain 145+ horsepower over stock
• Significant torque increases across all RPM ranges
• Improved throttle response and drivability
• Optimized fuel efficiency under load and daily use
• CARB EO Pending – emissions-compliant tuning

Power Levels

• Level 1: Stock
• Level 2: +30 HP
• Level 3: +65 HP
• Level 4: +120 HP
• Level 5: +145 HP

Experience PPEI Performance

Whether you’re towing, daily driving, or chasing max performance, PPEI tuning delivers consistent power and unmatched reliability for your 2017–2023 L5P Duramax.