Ford - OBD2 Emissions-On Tune Files (2003-2021)
Custom OBD2 Tune File for Ford Powerstroke (2003-2021) - Off-Road Use Only!
Already have an OBD2 Tuning Device? Maximize your Powerstroke engine's performance with our custom tune file, tailored for your specific vehicle and engine configuration. Designed to enhance both power and efficiency, this tune keeps emissions systems intact while optimizing engine parameters for better towing, responsiveness, and fuel economy.
Why Choose This Custom Tune File?
Unlock advanced performance without deleting emissions systems. This tune file offers:
- Increased horsepower and torque for enhanced towing performance
- Optimized engine operations to reduce wear and lower combustion temperatures
- Improved throttle response and reduced DPF regeneration cycles
Year Selection:
To ensure seamless tuning, please select the correct year for your Ford Powerstroke:
- 2003-2007 Powerstroke F-250/F-350/F-450/F-550 6.0L
- 2008-2010 Powerstroke F-250/F-350/F-450/F-550 6.4L
- 2018-2020 Powerstroke F-150 3.0L
- 2011-2019 Powerstroke F-250/F-350/F-450/F-550 6.7L
- 2020-2021 Powerstroke F-250/F-350/F-450/F-550 6.7L
Year Specific Key Considerations:
The 2020-2021 Powerstroke F-250/F-350/F-450/F-550 6.7L requires you to physically send in your ECM using this service here.
How It Works:
- Purchase the emissions-on tune: Select the tune associated with your vehicle's specifications.
- Read your vehicle: Use the OBD2 device you already have to read your vehicle’s control module and generate an info log.
- Send us the log: The info log is sent to our tuning specialist, who creates your custom tune file.
- Send us the log & read file: The info log and read file are sent to our tuning specialist, who creates your custom tune file. Connect to our tuning specialist using this contact form here.
- Write the tune to your vehicle: Upload the tune file to your device and flash it to your vehicle.
Upgrade your Ford Powerstroke with a custom tune file built for performance. Our expert team ensures that every file meets your vehicle's exact needs for optimal results.
Important Notes:
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Return Policies
Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.

