LB7 Duramax EFI Live DSP5 SOTF Tuning Kit

AutoCal V3 Preloaded • VIN License Included • DSP5 Switch Included

2001–2004 Chevrolet / GMC Duramax

This is the complete, turnkey EFI Live tuning solution for the LB7 Duramax.

If you do not already own an EFI Live device, this package includes everything required to tune your truck:
a preloaded EFI Live AutoCal V3, VIN license, DSP5 Switch-On-The-Fly (SOTF) tuning, and a physical DSP5 switch — all custom calibrated in-house by Piston Twistin.

No extra purchases. No licensing headaches. No guesswork.

🔒 IMPORTANT — PLEASE READ BEFORE PURCHASING

• ✅ Includes EFI Live AutoCal V3 (preloaded)

• ✅ Includes VIN license for your LB7

• ✅ Includes DSP5 Switch-On-The-Fly tuning (5 power levels)

• ✅ Includes physical DSP5 switch

• ✅ Any turbo / injectors / CP3 supported

• ❌ Not a single-file tune

• ❌ Not email-only tuning

👉 If you already own an EFI Live device, you may not need this kit.
See our LB7 DSP5 File-Only or Single File options instead.

What’s Included in This Kit

✅ EFI Live AutoCal V3 (Preloaded)

• Shipped to you ready to plug in

• No laptop required

• Simple, guided flashing process

• Industry-standard EFI Live hardware

✅ VIN License Included

• Your truck’s VIN is licensed to the device

• No extra license fees

• No unlocking or linking issues

• You own your tuning access

✅ DSP5 Switch-On-The-Fly (SOTF) Tuning

This kit includes five fully custom EFI Live tunes in one file, selectable instantly using the DSP5 switch.

Change power levels while driving — no reflashing, no downtime.

✅ Physical DSP5 Switch (Included)

• Dash-mounted rotary switch

• Required to use DSP5 functionality

• Allows instant power level selection

• Clean, OEM-style installation

🎛️ DSP5 Power Level Layout (Typical Example)

Your DSP5 layout can be customized, but a common setup looks like:

DSP5 Position 1 – Stock / Economy

+15–25 RWHP
Best for daily driving, longevity, and fuel economy.

DSP5 Position 2 – Light Tow

+40–60 RWHP
Ideal for towing under ~10,000 lbs with controlled EGTs.

DSP5 Position 3 – Heavy Tow

+60–80 RWHP
Designed for heavy towing (10,000–15,000+ lbs).
Strong mid-range torque with safe heat management.

DSP5 Position 4 – Street Performance

+80–110 RWHP
Responsive throttle and strong acceleration while remaining daily-drivable.

DSP5 Position 5 – Performance / Race

+120–200+ RWHP (mod-dependent)
Maximum power for built trucks and aggressive setups.

Power gains vary based on turbo size, injectors, CP3, and supporting modifications.

Why Piston Twistin EFI Live Tuning Is Different

At Piston Twistin, DSP5 tuning is not just stacked power levels.

Each DSP5 position is:

• Independently calibrated

• Built specifically for its purpose

• Refined using datalog feedback

• Revised as your setup evolves

Many tuning companies charge extra for:

• Bigger turbos

• Larger injectors

• High-flow or stroker CP3s

• Additional power levels

• Hourly tuning support

We don’t.

✅ Our Pricing Philosophy

• One flat price

• Any turbo

• Any injector size

• Any CP3

• Unlimited tune revisions included

• No hourly support fees — ever

You don’t get punished for modifying your truck.

⚙️ How the Process Works

1️⃣ Place Your Order

This kit ships with everything needed to tune your LB7.

2️⃣ Submit Vehicle Information

You’ll receive a secure form to provide:

• Year & model

• Full modification list

• Turbo / injector / CP3 setup

• Intended use (daily, tow, street, race)

3️⃣ Custom DSP5 Development

1–2 Business Days Guaranteed

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

4️⃣ Device Shipment & Installation

• AutoCal V3 ships preloaded

• Plug into the OBD-II port and follow on-screen prompts

• DSP5 switch installs easily (basic wiring required)

Highly modified trucks may require datalogging for final optimization.

❓ Frequently Asked Questions

Do I need a laptop?

No.
The AutoCal V3 is completely standalone.

Do I need to buy anything else?

No.
This kit includes everything: device, VIN license, DSP5 tuning, and switch.

Do you charge for revisions?

No.
All revisions are included — no hourly fees.

Do you charge extra for aftermarket hardware?

No.
Any turbo, injectors, or CP3 are supported at no additional cost.

📦 What You’re Getting

• EFI Live AutoCal V3 (Preloaded)

• VIN License for Your LB7

• Custom DSP5 EFI Live Tune (5 Power Levels)

• Physical DSP5 Switch

• Unlimited Revisions & Ongoing Support

• Built 100% In-House by Piston Twistin

🔥 Order With Confidence

This is the most complete and flexible EFI Live tuning solution available for the LB7 Duramax.

If you want a true turnkey setup, maximum flexibility, and long-term support — this is the kit.

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

🚨 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.