
Derringer for 2025 L5P Duramax: Plug-and-Play Power
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 Leader in Diesel Performance

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.

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

Banks CoolRunner Oil Pan keeps your Duramax oil cooler and cleaner with race-grade FlowThru Fins™ and added fluid capacity for maximum heat control.

Upgrade your GMC 3500 Denali with the Banks Ram-Air Intake. Enjoy freer breathing, crisper throttle, and turbo whistle without check-engine lights.

Keep your Duramax MAP sensor clean with the Banks MAP Sensor Relocation Kit. Prevent soot buildup, improve reliability, and extend sensor life.
Banks exposes the “dirty little secret” of other intake brands and shows how the 2024+ Duramax L5P Ram-Air Intake delivers real airflow gains.

Banks Ram-Air Differential Cover and CoolRunner Oil Pan upgrades add capacity, reduce heat, and improve durability on a GMC Denali.
The Banks Derringer Tuner for 2024–25 Duramax 6.6L delivers +86 hp and +178 lb-ft, transforming towing performance and everyday drivability.

The Banks Ram-Air Intake increases mileage and adds turbo whistle on the 2024 GMC Duramax, delivering proven gains in just 45 minutes.

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.