DDP DDPNLLY-50 DURAMAX 04.5-05 LLY BRAND NEW INJECTOR SET 20 PERCENT OVER 50HP

Boost your Duramax without overhauling the fuel system. The DDPNLLY‑50 injector set delivers a clean +50 rear-wheel horsepower increase via a 20% fuel flow bump—crafted to work seamlessly with stock CP3 pumps and turbos. Ideal for daily drivers or light towing, this upgrade balances performance with efficiency.

 Key Benefits & Features

• ≈+50 RWHP Performance Gain – Moderate yet noticeable power boost without strain
  

• Supports up to ~625 RWHP – Capable of handling extra power with proper supporting mods
  

• Brand-New Injector Set – No reman parts, no core charge—just fresh internals
  

• Flow-Balanced & Matched – Ensures even delivery and smooth operation across all cylinders

• SAC-Style Nozzles – Efficient spray for clean combustion and durability
  

• Street-Ready Compatibility – Plug-and-play with stock fuel system—no additional fueling mods needed
  

• 3-Year Warranty + Free U.S. Shipping – Strong coverage with no core-return hassles

• ⚠️ Pyrometer Recommended – Monitor EGTs under load for safe operation

• ⚠️ Not Legal in California – Restricted under Prop 65
  

Vehicle Fitment

• Engine: 6.6 L Duramax LLY

• Model Years: 2004.5–2005 Chevy GMC 2500/3500 HD

• Configuration: Complete 8‑injector matched set

 What You Get

• (8) Brand-new, flow-balanced injectors

• Flow-test documentation

• 3-year unlimited-mile warranty

• Free standard shipping within continental U.S.

 Ideal For:

• Daily-driven LLY Duramax owners seeking a clean performance boost

• Light towing applications on stock fuel systems

• Enthusiasts who want OEM compatibility with a power upgrade

 Install Tips

1. Plug-and-play: Works with stock CP3 and turbo—no fueling mods needed
   

2. Monitor temps: Adding a pyrometer helps ensure safe EGTs under load

3. Balanced performance: Matched injectors prevent hiccups or uneven fueling

4. Inspect hardware: Check hold-down bolts and lines during installation

 Final Take

The DDPNLLY‑50 is a smart, reliable power step for your 04.5–05 LLY Duramax—delivering +50 RWHP gains, unmatched drivability, and core-free convenience. Enjoy stronger performance without sacrificing fuel economy or requiring expensive fuel system upgrades.