Pay in 4 interest-free payments of $187.50 Learn more
Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
The 2nd Gen location offers a straighter exhaust path and cooler intake temps
and overall transmission performance while maintaining reliability
and real-world use
and enhanced overall performance with our L5P transmission tuning
All initial tuning and revisions will be completed on gasoline
2024-2026 GM Duramax L5P - Global B HP Tuners GM E42 ECM Upgrade Service Travel Must-Have The 2nd Gen location offersHP Tuners GM E42 ECM Upgrade Service 20242025 GM L5P Duramax Unlock the full tuning potential of your 20242025 GM L5P Duramax with HP Tuners E42 ECM Upgrade Service. This mail in upgrade is the first required step for custom tuning using HP Tuners VCM Suite (Beta) and MPVI3 device. How It Works: Place your order. Receive detailed shipping instructions for sending in your original factory ECM. HP Tuners performs the unlock service. Your ECM is shipped
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