LMM Duramax EFI Live Tuning — Preloaded AutoCal V3 Package (2007.5–2010)

Custom In-House DSP5 Switch-On-The-Fly Tuning by Piston Twistin

This package is the complete, ready-to-flash EFI Live tuning solution for 2007.5–2010 LMM Duramax trucks equipped with off-road / deleted emissions systems.

Your EFI Live AutoCal V3 arrives preloaded, VIN-licensed, and ready to install, including custom DSP5 Switch-On-The-Fly tuning, off-road delete calibration, and all required hardware — no software setup, no extra licenses, and no hourly support charges.

🚨 OFF-ROAD USE ONLY — IMPORTANT NOTICE

This product includes off-road use calibration and is intended for vehicles that are not operated on public roadways.

✔️ EGR delete support
✔️ DPF delete support
✔️ Off-road exhaust configurations supported
✔️ 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 applicable laws is the responsibility of the vehicle owner.

🔒 WHAT THIS PACKAGE INCLUDES

• EFI Live AutoCal V3 device (preloaded & ready to flash)

• VIN license included (no additional licensing required)

• Custom EFI Live DSP5 Switch-On-The-Fly tuning (5 power levels)

• Off-road EGR & DPF delete calibration

• DSP5 rotary switch

• Stock factory calibration included

• Unlimited tune revisions for future modifications

• Lifetime support — no hourly rates, ever

This is a complete tuning package. Nothing else is required.

Why Choose Piston Twistin?

Many tuning companies advertise a low base price, then charge extra for:

• Bigger turbos

• Larger injectors

• Modified or stroker CP3s

• Additional power levels

• Hourly tuning support

Those costs add up fast.

We don’t do that.

✅ Our Pricing Philosophy

• One flat price

• Any turbo

• Any injector size

• Any CP3

• All DSP5 power levels included

• Unlimited revisions

• No hourly support fees

Your truck evolves. Your tuning support evolves with it.

🔧 Custom DSP5 Switch-On-The-Fly Tuning

This package includes five independently calibrated EFI Live tunes, selectable on-the-fly using the included DSP5 switch.

Each power level is:

• Built 100% in-house

• Tuned specifically for your modification list

• Designed for a specific use case

• Refined using datalog feedback when needed

This is not stacked or generic tuning — each DSP5 position is its own calibration.

🎛️ Typical DSP5 Power Level Layout

(Final layout customized to your goals)

Power output varies based on turbo size, injectors, CP3, and supporting modifications.

⚙️ How the Process Works

1️⃣ Place Your Order

This is a complete AutoCal tuning package — device included.

2️⃣ Submit Vehicle Information

You’ll receive a secure form to provide:

• Year & model

• Full modification list

• Turbo / injector / CP3 setup

• Intended use (daily, towing, performance)

3️⃣ Custom Tune Development

1–3 Business Days

Your DSP5 tuning is built specifically for your truck — not a generic file.
Your stock factory calibration is included at no extra charge.

4️⃣ Plug In & Flash

Your AutoCal arrives preloaded. Plug it into the OBD-II port and flash in minutes.

Highly modified trucks may require datalogging for final optimization.

🚛 Performance & Drivability Benefits

• Faster throttle response

• Strong low-RPM torque

• Smooth power delivery

• Controlled EGTs under load

• Improved drivability with off-road exhaust systems

• Improved fuel economy when driven responsibly

❓ Frequently Asked Questions

Does this include delete tuning?
Yes. This package includes off-road EGR and DPF delete tuning.

Do I need to buy anything else?
No. This package includes the AutoCal, VIN license, DSP5 switch, and tuning.

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

Can I return the truck to stock?
Yes. Your stock calibration is always retained.

🔥 Order With Confidence

Hundreds of Duramax owners trust Piston Twistin for:

• Transparent pricing

• Proper off-road tuning

• Real support

• Proven results

If you want your LMM Duramax tuned correctly, without being nickel-and-dimed or rushed through a generic file, this is the package.

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