Product Description
Unlock serious horsepower and crisp throttle response on your LLY with the Exergy E02 10207 NEW 60% Over Injector Set. Each brand-new Exergy injector is precision-built, flow-matched, and calibrated for consistent fueling, smooth idle, and reliable power delivery on 2004.5–2005 Duramax 6.6L LLY trucks.
Why Choose Exergy 60% Over Injectors
- Brand-new (not reman) injectors for maximum reliability
- ~60% increase in flow over stock—ideal for street/strip and tow rigs with supporting mods
- Flow-balanced as a matched set for clean combustion and drivability
- Built, tested, and verified to Exergy’s stringent standards
Fitment
- Make/Model: Chevrolet Silverado 2500HD/3500HD; GMC Sierra 2500HD/3500HD
- Engine: GM Duramax 6.6L LLY
- Years: 2004.5, 2005
What’s Included
- (6) Brand-new Exergy 60% over injectors (LLY)
- Calibration/flow documentation
- Install hardware as supplied by Exergy (see product options)
Recommended Supporting Parts
60% over injectors require sufficient low- and high-pressure fuel supply and appropriate tuning. We recommend:
- Duramax lift pump systems for stable supply and superior filtration.
- Exergy CP3 options for LLY:
- Other Exergy LLY injector sizes (match to goals/turbo):
- Duramax Gaskets & Seals for leak-free installs.
- Shop all Exergy Performance
Tuning & Fuel System Notes
- Custom tuning is required to command proper pulse width and rail pressure with 60% over injectors.
- Lift pump strongly recommended; contamination kills injectors—use quality filtration and clean fuel.
- Verify air system (turbo, intercooler) and transmission health for higher power levels.
Frequently Asked Questions
Q: Are these injectors new or reman?
A: These are brand-new Exergy injectors (not remanufactured) built and calibrated as a matched set.
Q: Do I need a CP3 upgrade?
A: A healthy stock CP3 can support mild use, but for best results pair with an Exergy CP3 like the Sportsman or 12mm Stroker, plus a quality lift pump.
Q: What power can 60% overs support?
A: Power capability depends on air/turbo and tuning. As a rule, 60% sets suit strong street builds and weekend strip trucks.
Q: Core charge & warranty?
A: See product options/checkout for any core details. Manufacturer warranty applies when installed with proper filtration and procedures.
About Exergy Performance
Exergy is a leader in precision diesel fuel system components. Explore the full lineup here: Exergy Performance at CPP Diesel.
