LML Duramax EFI Live Preloaded AutoCal — Single File Only (2011–2016)

Custom In-House Calibration by Piston Twistin

This product is for customers who want a ready-to-use EFI Live AutoCal V3 preloaded with one custom tune file for their 2011–2016 LML Duramax.

No laptop.
No linking headaches.
No guesswork.

Your AutoCal arrives fully configured, VIN-licensed, and ready to flash, with a single custom EFI Live calibration built specifically for your truck’s exact setup and intended use.

🚨 OFF-ROAD USE ONLY — IMPORTANT NOTICE

This tuning includes off-road / competition-use calibration and is intended for vehicles not operated on public roadways.

✔️ EGR delete support
✔️ DPF delete support
✔️ SCR / DEF delete support
✔️ Proper diagnostic logic handling

By purchasing this product, you acknowledge that your vehicle is used in an off-road, competition, or closed-course environment and that compliance with all local, state, and federal laws is the responsibility of the vehicle owner.

🔒 IMPORTANT — PLEASE READ BEFORE PURCHASING

✅ Includes EFI Live AutoCal V3
✅ Includes VIN license
✅ Includes one custom EFI Live tune file
✅ Preloaded & ready to flash (plug-and-play)

❌ NOT DSP5 / NOT switch-on-the-fly
❌ Single tune file only

👉 If you are looking for multiple power levels or DSP5 switching, please select our LML DSP5 or Multi-File products instead.

🔧 What You’re Getting

✔️ EFI Live AutoCal V3 (brand new)
✔️ VIN-licensed to your truck
✔️ One fully custom EFI Live tune file
✔️ Off-road delete calibration included
✔️ Stock factory calibration included
✔️ Unlimited revisions (no hourly fees)
✔️ Ongoing support from Piston Twistin

Every tune is built 100% in-house — never generic, never outsourced.

⚡ Why Single-File Tuning on LML?

Unlike earlier Duramax platforms, LML trucks do not support true DSP5 switch-on-the-fly tuning.

Because of this, the cleanest and safest setup for an LML is:

• One properly calibrated tune

• Matched exactly to your hardware

• Optimized for your primary use

This avoids unnecessary complexity and ensures consistent drivability, reliability, and performance.

⚙️ Typical Power Options (Final Tune Is Custom)

Power output varies based on turbo, fuel system, transmission, and supporting mods.

Your tune is custom-built, not selected from a preset list.

🧠 Why Piston Twistin?

Many tuning companies:

• Charge extra for turbos

• Charge extra for injectors

• Charge extra for CP3 upgrades

• Bill hourly for revisions

We don’t.

✅ Our Pricing Philosophy

• One flat price

• Any turbo

• Any injector size

• Any CP3

• Off-road delete included

• Unlimited revisions

• No hourly support fees — ever

Your truck evolves. Your tune support doesn’t stop.

📦 How the Process Works

1️⃣ Place Your Order

This product ships a preloaded AutoCal V3 with one custom tune.

2️⃣ Submit Vehicle Information

You’ll receive a secure form to provide:

• Year & model

• Full modification list

• Turbo / injectors / CP3

• Intended use (daily, tow, performance)

3️⃣ Custom Tune Development

1–2 business days guaranteed
Your calibration is built specifically for your truck.

4️⃣ Plug & Play Installation

• AutoCal arrives preloaded

• Plug into OBD-II port

• Follow on-screen prompts

• Flash in under 10 minutes

Highly modified trucks may require datalogging for final optimization.

❓ Frequently Asked Questions

Do I need a laptop?
No. The AutoCal is fully standalone.

Can I return to stock?
Yes. Your stock factory calibration is included.

Do you charge for revisions?
No. All revisions are included — no hourly fees.

Does this include the device and VIN license?
Yes. Everything required is included.

🔥 Order With Confidence

If you want a simple, plug-and-play solution with proper off-road delete tuning and real long-term support — this is it.

📩 Questions? Email us anytime at Support@PistonTwistin.org

👉 Add to Cart and get your LML dialed in the right way, the first time.