Available for: Cummins X15 2024-2026

Key Benefits:

Industry Leading Horsepower and Torque Increase
Fuel Mileage Improvement
Striking Gauge and Monitoring Options
Diagnostic Fault Code Troubleshooting
DPF Regen and Restriction Tests*
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Shipping Now! The BIG BOSS® Performance Tuner brings all the benefits of tuning without all the hassle. Simply plug it into your diagnostics port and follow the simple instructions to have the results of tuning with the press of a button.