Transform your LML Duramax into a high-performance powerhouse with PistonTwistin’s precision-engineered, plug-and-play ECU tuning via EFI Live. 🚀 Experience up to +100 HP and +100 lb-ft of torque while preserving factory reliability.

🔧 Why Choose PistonTwistin Tuning?

• ⚡ Maximum Power Gains

  Rapid throttle response & minimized turbo lag for instant power when you need it 

• ⛽ Improved Fuel Efficiency

  Squeeze more miles per gallon without compromising power ( The higher the HP the tune the better the MPG you will get if you drive conservatively)

• 🚚 Towing Mastery

  Effortlessly haul 15,000 + lbs with confidence. Or if you compete in pull competitions we can help, get you dialed in for that.

• 🔄 Seamless Integration

  Works with your stock ECU—no permanent modifications required . Can be returned back to "stock" power at anytime.

• 🎛️ DSP5 Switchable Modes

  Five distinct power profiles at your fingertips for any driving scenario. We can customize these 5 tunes however you'd like and can put them in any order for you.

⚙️ How It Works

1. 🛒 Place Your Order
   Choose the tuning package tailored to your needs.

2. 📧 Order Confirmation
   Receive an email with a secure link to our easy vehicle-info form.

3. ✍️ Submit Vehicle Details
   Tell us your year, model, and any aftermarket mods—ensuring a perfect custom tune.

4. 🏁 Custom Tune Creation
   Our expert technicians review & test every calibration this takes (1–3 business days).
   

5. 📥 Delivery & Install
   – Email: Get your tune file ready for AutoCal or FlashScan.
   – AutoCal V3: Pre-loaded device ships to you—just plug in and go.
   – Bench Flashing: Ship us your ECM/TCM; we flash and return it.

⚠️ Highly modified trucks require datalogging for pinpoint accuracy.

🛠️ Installation Options

📊 Power Levels & Specs

We recommend avoiding SOTF (switch-on-the-fly) on LMLs. Unlike older generations, they can’t hold five separate tunes—it just tricks the fuel system by limiting fueling, which ends up making the truck run poorly. We only use single tunes on LMLs and suggest going with a high-horsepower one. The higher the horsepower, the better the MPG—as long as you’re not constantly flooring it

🔥 Performance Upgrades & Parts

Stage 1 Intake Kit

• Airflow – Stage 1 

  STAGE 1 HSP Diesel 2011-2016 Chevrolet / GMC Cold Air Intake - 502-2-HSP

  ✔HSP 4" Intake Kit with Air Box

  ✔ Increases airflow, throttle response, and turbo spool

  ✔ Custom powder coat finish

  📌 Availability:

  ✔ Raw, Red, Grey, White, and Black – Ships in 5-10 business days

  ✔ Custom colors – 15-20 business day lead time

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   LML STAGE 1 FULL DESCRIPTION – Piston Twistin

  
  

Stage 2 Bundle ( EGR SOLUTION )

• STAGE 2 HSP Diesel 2011-2016 Chevrolet / GMC Max Air Flow Bundle - 583-2-HSP

  ✔ HSP Stage 2 High Flow Intake Bundle Kit

  ✔ Includes 3" Y-Bridge, intercooler pipes, and high-flow intake

  ✔ Optimized turbo efficiency & lower EGTs

  ✔ Durable custom powder coat finish

  📌 Availability: 

  ✔ Custom colors – 15-20 business day lead time

  📌 Availability: 

  ✔ Custom colors – 15-20 business day lead time

LML STAGE 2 FULL DESCRIPTION – Piston Twistin 

Exhaust Options

• MBRP STRAIGHT PIPE
  

• 4IN MORE TURBO WHISTLE 4" Exhaust Sound

• 5IN MORE V8 RUMBLE 5" Exhaust Sound

• LML HIGH FLOW EXHAUST – Piston Twistin

Wehrli 3″ Downpipe

• Ceramic-coated, heat-wrapped, bolt-on design

• 2004.5-2010 LLY LBZ LMM HIGH FLOW DOWNPIPE FULL DESCRIPTION – Piston Twistin
  

❓ FAQs

I just placed my order—what should I expect?
➡ I just placed my order. What should I expect? – Piston Twistin

Is professional installation required?
No – DIY install in under 10 minutes with no tools.
➡ How To Flash The Tunes To My Truck? – Piston Twistin

Does it work on other Duramax engines?
Yes – we tune all Duramax generations, plus Cummins & Powerstroke platforms.
➡ Why Should I Tune My Truck? – Piston Twistin

What is bench flashing?
On-bench ECM/TCM flashing for locked units or if you don’t have an EFI device.
➡ WHAT IS BENCH FLASHING ? – Piston Twistin

What power levels are available?
Five levels via DSP5 switchable tuning.
➡ LB7 Duramax Performance Power Level In depth description – Piston Twistin

Why upgrade fuel filtration?
Prevents injector damage and boosts engine health and performance.
➡ [ Fuel Filtration Upgrades for Duramax and the Importance of Installing – Piston Twistin]

✨ Ready to unleash your Duramax’s true potential? Click Add to Cart now and join tons of satisfied truck owners who trust PistonTwistin for performance, reliability, and peace of mind. ✨Feel free to reach out anytime if you have questions. We are more than happy to go more in depth on anything your curious about . Reach us at

( PistonTwistin@gmail.com)