
2024–25 L5P Duramax Banks Derringer Now Smog Legal
The Banks Derringer Tuner for 2024–25 L5P Duramax is now officially California smog legal. Enjoy +86 hp, +178 lb-ft, and full 50-state emissions compliance.
The Leader in Diesel Performance

The Banks Derringer Tuner for 2024–25 L5P Duramax is now officially California smog legal. Enjoy +86 hp, +178 lb-ft, and full 50-state emissions compliance.

The Banks Power Bundle for 2024+ L5P Duramax models is now officially California emissions compliant, combining performance and legal peace of mind.

The Banks Derringer tuner for the 2025 L5P Duramax adds +86 hp and +178 lb-ft with smart OBD integration, PedalMonster stacking, and dealer-safe design.

The Banks Wideband O₂ AFR Module delivers pro-level accuracy for tuning. Pair it with the iDash Data Pro to log, analyze, and perfect your setup.

DemonWorks upgrades a 2025 Silverado 2500 L5P with the Banks Derringer, PedalMonster, and iDash Pro for instant throttle, stronger midrange, and seamless control.

Banks iDash sensors make older trucks smarter by adding pressure, temperature, and frequency data monitoring with real-time engine insights.

See how the Duramax L5P Power Pack with Ram-Air Intake, Boost Tubes, Derringer, PedalMonster, and more transforms towing and performance.
The Banks Derringer Tuner for 2024–25 Duramax 6.6L delivers +86 hp and +178 lb-ft, transforming towing performance and everyday drivability.

Discover how a 2024 Silverado 2500 owner transformed his truck’s performance with a complete suite of Banks upgrades, including the Monster-Ram, Derringer tuner, Ram-Air Intake, and more.

GM Diesel technician Steven Laperriere shares how the Derringer Tuner transformed his 2024 GMC Duramax. From daily driving to towing, the power increase, factory-safe tuning, and iDash integration make it the best performance upgrade he’s installed.