LMM Duramax EFI Live DSP5 SOTF Tuning — File Only (2007.5–2010)
Custom In-House Switch-On-The-Fly Calibration by Piston Twistin
This product is for customers who want DSP5 Switch-On-The-Fly (SOTF) EFI Live tuning for their 2007.5–2010 LMM Duramax, delivered as a tune file only.
You’ll receive five custom power levels in one EFI Live file, selectable on the fly using a DSP5 switch — all built 100% in-house by Piston Twistin, with off-road delete calibration included and unlimited revisions at no hourly cost.
This is not a generic tune pack. Each DSP5 position is individually calibrated 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
✔️ 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 laws is the responsibility of the vehicle owner.
🔒 IMPORTANT — PLEASE READ BEFORE PURCHASING
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✅ DSP5 / Switch-On-The-Fly EFI Live tuning
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✅ 5 custom power levels in one tune file
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✅ Requires an EFI Live AutoCal or FlashScan (any generation)
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✅ Requires a physical DSP5 switch installed
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❌ EFI Live device not included
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❌ DSP5 switch not included
👉 If you do not already own an EFI Live device or DSP5 switch, please select one of our LMM Preloaded AutoCal Kits instead.
What Is DSP5 / Switch-On-The-Fly?
DSP5 allows you to switch between five different tuning calibrations while driving, using a dash-mounted rotary switch.
No reflashing.
No laptop.
Instant power level changes.
One truck — five distinct tuning personalities.
Why Piston Twistin DSP5 Tuning Is Different
Many tuning companies:
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Stack power levels on top of one another
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Charge extra for bigger turbos or injectors
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Bill hourly for revisions or support
We don’t.
✅ Our DSP5 Pricing Philosophy
Your truck evolves. Your tuning support evolves with it.
🔧 What You’re Getting
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1× Custom EFI Live DSP5 Tune File
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Five independently calibrated power levels
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Off-road EGR & DPF delete tuning
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Stock factory calibration included
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Unlimited revisions for future changes
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Ongoing support from Piston Twistin
Each DSP5 position is tuned separately — not scaled or copy-pasted.
🎛️ Typical DSP5 Power Level Layout
(Final layout customized to your goals)
| DSP5 Position |
Use Case |
Description |
| Position 1 |
Optimized Stock |
Clean daily driving, best MPG |
| Position 2 |
Tow |
Heavy towing with controlled EGTs |
| Position 3 |
Light Tow / Street |
Balanced power and drivability |
| Position 4 |
Street Performance |
Aggressive daily driving |
| Position 5 |
Max Effort |
Built trucks / performance use |
Power output varies based on turbo size, injectors, CP3, and supporting modifications.
⚙️ How the Process Works
1️⃣ Place Your Order
This product delivers one DSP5 EFI Live tune file.
2️⃣ Submit Vehicle Information
You’ll receive a secure form to provide:
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Year & model
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Full modification list
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Turbo / injector / CP3 setup
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Intended use (daily, towing, performance)
3️⃣ Custom DSP5 Development
1–2 Business Days Guaranteed
Your DSP5 tuning is built specifically for your truck — not a generic preset.
Your stock factory calibration is included at no extra charge.
4️⃣ Tune Delivery
Highly modified trucks may require datalogging for final optimization.
❓ Frequently Asked Questions
Do I need a DSP5 switch?
Yes. A physical DSP5 switch is required to use multiple power levels.
Is this a single-file tune?
No. This is a DSP5 multi-power-level tune. For single-file tuning, see our LMM Single File product.
Do you charge for revisions or support?
No. All revisions and support are included — no hourly fees.
Do you charge extra for aftermarket hardware?
No. Any turbo, injectors, or CP3 are supported at no additional cost.
🔥 Order With Confidence
If you want maximum flexibility, proper off-road delete tuning, and the ability to change your truck’s behavior instantly — DSP5 is the move.
📩 Questions? Email us anytime at Support@PistonTwistin.org
