DDP LLY-XX High Flow Injector Set

From $3,800.00 to $4,607.50
Sale Price:
From $3,420.00 to $4,146.75
Product Options
Power Level:
2004.5-2005 GM 6.6L Duramax LLY
DDP (Dynomite Diesel)
Product Options

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The DDP LLY-XX High Flow Injector Set for your 04.5-05 GM 6.6L Duramax LLY will make your Duramax Fly. With the Allison 5 and 6 speed, the Duramax is already fun to drive. Why not add an addition kick with DDP Injectors. Unlike an electronic box, honed performance injectors are almost impossible for a factory technician to detect. With DDP’s Balance Honed injectors you can be confident that your warranty will not be compromised and you’ll have the extra pulling power to beat your friends up the mountain.

The 50 horsepower nozzles will give you 50hp at the wheels. You can use these in conjunction with an aftermarket electronic box or downloader without the worry of draining the fuel rail dry. We do not offer a 90hp version because we feel that 50 is the largest you can do without needing dual injection pumps. These injectors work equally well in a completely stock truck.


  • 1-Year Unlimited Mileage Warranty
  • 1-2 MPG Increase Common on 50HP Nozzles
  • Race Injectors Also Available

Power Levels:

  • 50HP: Will support up to 625 RWHP. Sold as a balanced set.  Safe on stock trucks. Excellent street manners & MPG. Pyrometer recommended. 
  • 75HP: Enough fuel to support roughly 700 RWHP. Biggest injector recommended for stock turbo. Pyrometer recommended.
  • 100HP: Enough fuel to support roughly 775+ RWHP. Modified or Dual CP3 as well as custom tuning highly recommended. Use of pyrometer mandatory.
  • Super Mental: Intended for 825+ RWHP applications. Recommended for off-road use only! Built to spec based on intended use & vehicle modifications. Sold as balanced set upon completion of race waiver. NO RETURNS or WARRANTY.

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