SKU: 38437446861

Stage 1 LLY Duramax Delete Kit (2004.5–2005) | EGR Competition Use Kit

Sale price$607.50 Regular price$675.00
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Description

Stage 1 LLY Duramax Delete Kit (2004.5–2005) | EGR Competition Use KitLLY Duramax EFI Live Tuning Kit Complete Custom DSP5 Solution Built by PistonTwistin 2004. 52005 Duramax Take your LLY Duramax to the next level with our all in one EFI Live tuning kitdesigned to deliver maximum performance, improved drivability, and dependable towing power. Whether you're daily driving, towing heavy, or chasing horsepower, this plug and play custom tuning solution is built around your trucks exact needs. Why Choose PistonTwistin

LLY Duramax EFI Live Tuning Kit – Complete Custom DSP5 Solution

Built by PistonTwistin | 2004.5–2005 Duramax

Take your LLY Duramax to the next level with our all-in-one EFI Live tuning kit—designed to deliver maximum performance, improved drivability, and dependable towing power. Whether you're daily driving, towing heavy, or chasing horsepower, this plug-and-play custom tuning solution is built around your truck’s exact needs.


🔧 Why Choose PistonTwistin Custom Tuning?

Precision-Built EFI Live Calibration

Every tune is built from the ground up based on your truck’s modifications, usage, and goals. No canned or reused files.

Power On Demand

Experience faster throttle response, reduced turbo lag, and instant torque—exactly when you need it.

Fuel Economy Gains

Properly tuned power increases engine efficiency. Higher horsepower often means better MPG under conservative driving.

🚛 Serious Towing Confidence

Confidently haul loads over 15,000 lbs or dominate in sled pulls—we’ll tune you accordingly.

🎛️ Switch-On-The-Fly DSP5 Control

Switch between five custom power levels using your DSP5 knob. We can fully customize tune order and power output to match your driving habits.

🔄 Reversible & Safe

No permanent changes to your ECU—return to stock power at any time if needed.


⚙️ How It Works

  1. Place Your Order
    Choose between AutoCal V3, email delivery, or bench flashing.

  2. Submit Vehicle Details
    You’ll receive a secure digital form to provide info on your LLY’s year, mods, and intended use.

  3. Custom Tune Creation
    Our experienced calibration team builds your tune (1–3 business days) and verifies it against your setup.

  4. Tune Delivery Options

  • AutoCal V3: Ships pre-loaded, plug-and-play

  • Email Delivery: For customers with existing EFI Live devices

  • Bench Flashing: Mail us your ECM/TCM—we flash it and return it fast

Note: Highly modified setups may require datalogging for precision tuning.


📊 Power Levels & Use Case Guide

Mode RWHP Gain Best For
Stock Optimized +20 HP Clean daily driving
Heavy Tow +40 HP 15,000+ lbs hauling
Light Tow +60 HP Towing under 15,000 lbs
Street Performance +100 HP Daily use & responsive driving
Sport / Max Effort +120–200 HP Built trucks / racing

All five DSP5 tune levels can be tailored to your mods (intake, exhaust, injectors, CP3 conversion, etc.) and truck goals.


🔩 Recommended Performance Upgrades

Stage 1 Cold Air Intake

HSP Diesel 4" Cold Air Intake Bundle – 081-HSP

  • Increases airflow and throttle response

  • Faster turbo spool

  • Custom powder coat finish

  • 📦 Ships in 5–10 business days (custom colors: 15–20 days)


Exhaust Options

  • 4” MBRP Straight Pipe: Enhanced turbo whistle

  • 5” MBRP Straight Pipe: Deep, aggressive tone

  • Wehrli 3” Downpipe: Ceramic-coated, heat-wrapped, bolt-on upgrade


Common Questions

Is professional installation required?
No. AutoCal installs in under 10 minutes—no tools needed.

Can I use this on other Duramax models?
Yes. We support all Duramax generations, along with Cummins !

What is bench flashing?
For customers without a device or with locked ECMs, we offer professional bench flashing. Just send in your ECM/TCM—we’ll handle the rest.

What’s the benefit of better fuel filtration?
Protects your injectors and enhances long-term performance. Strongly recommended for tuned trucks.


Included With Your Order

  • 5x Custom DSP5 Tune Files

  • Fully personalized EFI Live tuning

  • Optional AutoCal V3 (pre-loaded, plug-and-play)

  • Lifetime support and retunes for future upgrades

  • Stock power reversion available anytime


🚀 Unlock Your LLY’s Full Potential

Join hundreds of LLY owners who trust PistonTwistin for proven performance, reliability, and long-term support. Whether you're hauling, racing, or commuting, our tuning gives you control and confidence behind the wheel.

📩 Have questions? Reach us at [email protected]

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
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Contemporary Gentleman
West Palm Beach, US
★★★★★ 5
A Textbook for My Students
Format: Kindle
I'm an adjunct instructor for several institutions where I teach adults how to design and develop software using various IDEs and languages. As a former military officer, I've come to appreciate the idea of ensuring my troops have all the training and gear they'll need to get the job done. Patrick exemplifies that spirit in his series, "From Zero to Proficiency." After reading his first two books in the series, I've decided that I'll use them in the Fall term to teach my students game development with Unity. The lessons are easy to follow, yet provide powerful impact upon game development. I've never come across any other author who continues to provide weekly support to his readers and Patrick Felicia does. He even solicits us to learn what we'd like for him to teach next. If you want to learn Unity from someone who actually knows how to teach it, I recommend his books. I read a lot of technical books, so I seriously appreciate it when an author can clearly convey knowledge in an easy-going manner that is technically correct. I'm very happy with these books and am sure my students will be too.
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Reviewed in the United States on April 7, 2016
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MEL
Lake Worth, US
★★★★★ 5
Step by Step
Format: Kindle
This series of books has step by step instructions that are easy to follow. There are lots of pictures to verify you are doing things correctly. I have done three books in this series so far (Foundations, Beginner, and Platform). Before starting the books, I had some coding background, but no experience with Unity. Each book covers a manageable amount of information. There is so much to learn, but the author does well to stick to key points to not make the reader feel overwhelmed.
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Reviewed in the United States on August 6, 2018
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GuyWithNoName
Louisville, US
★★★★★ 4
Seriously needs a proofreader
Format: Paperback
The content in this series is good, but the presentation is in need of a proofreader. There are so many typos and wrong words (ignoring that it's UK English). It's like the author typed what he heard in his head, but the words are something different. For example, a section introduces the "Package Manager," which is then inconsistently called the "Packet Manager." Or "research term" instead of "search term." Or "PlayGround" in the text when it's clearly "playground" in the figure. Even the provided resources are misspelled: "Sdandard Assets" in the code and the screenshots in the book. How does this go unnoticed? Programming isn't tolerant of these things.
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Reviewed in the United States on September 2, 2024
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Marleina Kaplar
West Palm Beach, US
★★★★★ 5
It’s definitely a book
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I bought this for my son’s college class. It’s exactly what they asked for.
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Reviewed in the United States on January 8, 2026
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FranCarv
Louisville, US
★★★★★ 5
Great Beginner's book.
Format: Kindle
I really like Pat's approach to learn Unity. I'm working my way through his books, just finish this one (second in the series). I've tried to learn Unity in the past and fail and now I know why. Pat's walks you from the beginning, you learn how to build games from a blank canvas and putting all pieces together. It's a step by step approach so you are never wondering how to get to a certain stage. If you are new to Unity and Programming strongly suggest you starting with book 1 "foundation" and then move to this one.
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Reviewed in the United States on June 15, 2020

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