2006-2016 Duramax Twin CP3 Controller

2006–2016 Duramax trucks building serious horsepower need more high-pressure fuel volume than a single CP3 can sustain. Rail pressure dips show up as inconsistent delivery and extra stress on the factory gear-driven pump. Wehrli’s Twin CP3 Controller supplies the microprocessor, harness, and connectors to operate a second belt-driven CP3 with the stock pump so pressure stays smooth and drive load is shared.

This kit (WCF100094): Controller + wire harness + connectors for 2006–2016 Chevrolet/GMC 6.6L Duramax (LBZ/LMM/LML). This is the control package — not a complete twin-pump kit; you still need a compatible second CP3, mount/drive, and fuel plumbing.

Fitment gates:

• 2001–2005 Duramax (LB7/LLY) → use WCF100093
• Confirm second-pump mount, belt drive, and line routing for your chassis before ordering
• Idaho Falls install available when bay time allows

Shipping: This product cannot ship to California (same restriction as WCFab). Free ground on most orders over $150 excludes HI/AK — confirm at checkout.

Call 208-542-7793 with year, make, model, and twin-CP3 hardware list before you order.

Emissions-compliant performance only — Powertech Diesel does not sell deletes or defeat devices.