Product Description
Push your LLY build into serious competition territory with the EXERGY E01 10256 Reman 300% Over Injector Set. These 8 precision-calibrated, internally modified injectors deliver the fuel you need for high-HP drag, dyno, and sled-pull setups while preserving Exergy’s hallmark consistency and data-backed quality.
Key Benefits
- ~300% over flow with internal modifications for high-horsepower builds
- Remanufactured on OE cores with tight control of pilot, main, and return rates
- Extensively tested on industry-leading equipment for repeatable results
- Engineered by Exergy Performance—leaders in precision diesel fuel systems
Fitment
- Make/Model: Chevrolet Silverado 2500HD/3500HD; GMC Sierra 2500HD/3500HD
- Engine: 6.6L Duramax LLY
- Years: 2004.5, 2005 (mid-year LLY introduction)
- Intended for competition/off-road builds; supporting mods required (air, fuel supply, tuning)
What’s Included
- (8) Exergy E01 10256 Reman 300% Over Injectors (LLY)
- Flow data from Exergy’s calibration process
Recommended Supporting Parts
Pair your injectors with Exergy or CPP-vetted components for reliability and control:
- Shop All Exergy Performance
- Exergy Injectors (Brand Collection)
- Looking for other LLY injector options from Exergy?
- Duramax Gaskets & Seals
- Lift Pumps & Fuel Supply (shop options)
Install Notes
- Tuning required. 300% over injectors demand professional calibration and adequate turbo/airflow.
- Run a quality lift pump and filtration to protect the injectors.
- Competition/off-road use; verify local regulations before street use.
Frequently Asked Questions
Q: Are these drop-in?
A: Physical install is bolt-in, but proper tuning and supporting mods are mandatory at this flow level.
Q: What turbo and CP3 do I need?
A: Builds vary, but high-flow single or compound turbos and an upgraded CP3 (or dual fuelers) are typical at 300%.
Q: Do these come with flow data?
A: Yes—Exergy provides flow/return data from their calibration process.
Q: Core charge?
A: Reman sets usually include a refundable core charge. Details appear in product options at checkout.
About Exergy Performance
Exergy delivers OE-level precision for motorsport-grade diesel components. Explore the full lineup here: Exergy Performance at CPP Diesel.
