Product Description
Build a true competition-ready LB7 fuel system with the Exergy E01 10156 Reman 300% Over Injector Set w/Internal Modification. Each set is precisely calibrated and flow-matched by Exergy Performance for extreme fueling capability, supporting serious horsepower with proper air and pump supply while maintaining Exergy’s renowned quality control.
Who It's For
- Dedicated race/competition builds (drag, sled pull)
- High-boost, big-single or compound turbo setups
- Trucks with upgraded CP3(s), lift pump, and professional tuning
Key Benefits
- ~300% over flow for extreme fueling demands
- Internal modifications to support high rail and long pulsewidth control
- Exergy-calibrated and flow-verified for consistency across the set
- Remanufactured on OEM cores; built for durability under competition use
Fitment
- Platform: GM Duramax 6.6L LB7
- Years: 2001, 2002, 2003, 2004
- Vehicles: Chevrolet Silverado 2500HD/3500HD; GMC Sierra 2500HD/3500HD
What’s Included
- (8) Exergy E01 10156 Reman 300% Over LB7 Injectors – matched set
- Flow sheet / calibration data (when provided by manufacturer)
Required & Recommended Supporting Parts
These injectors demand adequate fuel supply and air. Pair with the following to protect your investment and achieve target power:
- Diesel Lift Pump (AirDog / FASS) – maintains supply pressure and filtration
- Exergy E04 10105 Sportsman CP3 (LB7) – minimum recommended; high-power builds may require dual CP3s
- Install Gaskets & Seals – always replace O-rings/crush washers
- Shop Exergy Performance – match injectors, pumps, and components from the same brand
Popular Exergy LB7 Alternatives (Brand-Matched)
Install & Tuning Notes
- Professional installation required. Follow LB7 service procedures and torque specs.
- Custom tuning is mandatory for 300% over injectors.
- Expect significant airflow upgrades (turbo/s), traction aids, and drivetrain upgrades for safe operation.
- Use the cleanest diesel possible; contamination is the #1 cause of injector failure.
Frequently Asked Questions
Q: Are these injectors street-friendly?
A: 300% over injectors are for race/competition. They require extensive supporting mods and custom tuning.
Q: What CP3 do I need?
A: At minimum, a high-quality Exergy CP3 such as the E04 10105 Sportsman. Many builds step up to dual CP3s.
Q: Do these come balanced and flow-matched?
A: Yes. Exergy flow-matches sets for consistent cylinder-to-cylinder fueling.
Q: Is there a core charge?
A: Many reman injector sets carry a refundable core charge. Details (if applicable) will appear in the product options or at checkout.
Q: Warranty?
A: Covered by Exergy’s manufacturer warranty subject to proper installation, clean fuel, and tuning.
About Exergy Performance
Exergy is a leader in precision diesel fuel system components for Duramax platforms and more. Explore the full lineup here: Exergy Performance at CPP Diesel.
