Twin CP3 Controller

Features:

• Fits 2006–2016 6.6L Duramax engines
• Supports LBZ, LMM, and LML models
• Controls dual CP3 fuel pump systems
• Designed for high horsepower builds
• Maintains smooth and stable rail pressure
• Enables second belt-driven CP3 pump
• Improves fuel volume and system reliability
• Reduces stress on single CP3 pump
• Microprocessor controlled for precise function

Dial In Dual CP3 Control with Confidence

If your Duramax build is running twin CP3 pumps, you need a controller that keeps both systems working together, not against each other. The Wehrli 100094 Twin CP3 Controller is designed for 2006 to 2016 Silverado and Sierra 2500HD and 3500HD models running LBZ, LMM, or LML engines. It provides precise microprocessor-based control that allows your second, belt-driven CP3 pump to operate in sync with the factory gear-driven unit. That extra fueling capacity is crucial for high horsepower builds, where maintaining steady rail pressure under heavy load can make or break your performance.

More Fuel, Less Stress, Better Reliability

What makes this controller such an important piece of the puzzle is how it balances the workload between both pumps. Instead of overloading the stock CP3 to meet higher demand, the Wehrli unit enables your secondary pump to share the load, improving both reliability and consistency across the powerband. This means smoother fueling, less strain on components, and more confidence when you put your foot down. Whether you're building a competitive truck or just want a fueling setup that can grow with future upgrades, this controller is a must-have for making your twin CP3 system work seamlessly and safely.

Fits: 2006, 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LBZ/LMM/LML