Upgrade your Duramax with the Fleece Performance PowerFlo 750 CP3 (LBZ/LMM Based) — a straightforward, no-fluff CP3 upgrade that reliably supports up to 750 RWHP when paired with the right supporting modifications. It’s engineered to stop the fuel-flow decline that kicks in at around 3,000 RPM, so power stays strong where you actually use it.

Why this CP3 stands out

• Direct, real-world horsepower: Designed to sustain 750 RWHP, not just impressive peak numbers you’ll never reach in daily driving.
• Eliminates RPM fuel-flow restriction: Maintains consistent fuel rail pressure across the entire RPM band, so horsepower doesn’t sag at the moment you need it most.
• Brand-new Bosch CP3 with no core charge: Ready to install today with no core return hassle or additional costs.
• LBZ/LMM-based design: Built to cover a broad Duramax landscape, spanning classic LB7/LLY up through modern LML/LBZ/LMM applications.
• Application notes address specific setups: For 2001–2005 LB7 or LLY engines, the fuel pressure regulator needs to be scaled appropriately. This is a targeted adjustment to ensure proper operation in older platforms.
• Warranty: Backed by a 1 Year Limited Parts Warranty for peace of mind.

Who should consider this upgrade

Performance-minded Duramax owners who want genuine, repeatable power gains without chasing inflated dyno numbers. If you’re building toward 700–750 RWHP and want to maintain fuel pressure across the RPM range, this CP3 upgrade provides a solid, reliable foundation. It’s also a smart choice for anyone looking to replace a stock CP3 with a modern, high-capacity unit to better support tuned injectors, higher-performance fueling, and other supporting mods.

What you get with this PowerFlo 750 CP3

• Robust 750 RWHP-capable fueling solution designed for LB7 through LML Duramax platforms
• Elimination of the 3,000 RPM fuel-flow cliff, preserving horsepower where it matters most
• New Bosch CP3 pump with no core-charge burden
• Compatibility across a wide year range (2001–2016+) with specific regulator scaling guidance for older LB7/LLY setups
• 1-year parts warranty for added confidence

Practical installation context and use cases

This upgrade is a practical, cost-effective step for drivers pursuing serious power without resorting to more complex or invasive solutions. Ideal scenarios include:

• Mid- to high- horsepower builds aimed at staying strong from 2,500–3,000+ RPM, such as highway accelerations, towing demanding loads while maintaining pace, or spirited street/endurance sessions.
• Retrofits for older LB7/LLY engines where regulator scaling improves fuel delivery consistency and rail pressure.
• Coupled with complementary modifications (injectors, upgraded fueling, and tuning) to unlock and sustain 750 RWHP.

Designed with Duramax enthusiasts in mind, the PowerFlo 750 CP3 delivers tangible, trackable improvements in fuel delivery and power retention. If you’re looking for a proven, drop-in CP3 upgrade that increases fueling capacity while removing a key RPM-related restriction, this unit is a thoughtful, durable choice that aligns with a wide range of Duramax builds.