PDI Big Boss Performance Tuner for 2024-2026 Cummins X15 EPA24

Ships Mid-August 2026. Pre-Order and Save $200! 

The PDI Big Boss Performance Tuner X15 EPA24 is the ultimate tool to help big rig and diesel motorhome owners take control of their vehicle and improve their overall driving experience.  The Big Boss Tuner puts engine and transmission-safe performance programming into an easy-to-use package that is simple to install and provides noticeable power and fuel mileage improvements. In addition to the added power and improved fuel economy, a PDI Tuner gives you access to and control over vital vehicle information. 

Product Specific Features:

• Tunes 2024-2026 Cummins X15 EPA24 Engines
• Multiple Tunes to Choose from to Add Power and Fuel Mileage
• 2 Added Power Levels, +10% Economy Tune & +15% Power Tune
• Read and Clear Diagnostic Trouble Codes (DTCs)
• Installation is Simple. All You Need is a Wireless Internet Signal.
• Display Multiple Vehicle Operating Parameters with the Big Boss Monitor
• Emissions Legal in all 50 States - Comes with CARB E.O.
• WiFi Updates Keep Your Tunes and Features Current Effortlessly
• Manage Your Diesel Particulate Filter (DPF) with Restriction Test and Manual Regeneration (Cleaning)
• We Include the PDI Big Boss Tuner Magnetic Mount for Free - a $50 Value and Parley's Diesel Exclusive
• NOTE: Please Include Your Engine Serial Number with Order so we can Verify Cummins KW or NN ECM Code

Fits the Following Cummins

• 2024-2026 Cummins X15 EPA24 (NN ECM Code)

The Magnetic Mount allows you to easily and securely place your Big Boss Performance Tuner within the vehicle cab in a position that you choose. The magnet has a super strong hold, and the design allows for quick mounting and releasing. 

Part Number 131008341939: 9-Pin EPA24

2024-2026 Cummins X15