Description
Professional-Grade Remote Tuning, Simplified.
The HP Tuners RTD4 is the next evolution in remote tuning technology, designed to connect vehicle owners with their preferred professional tuner in the easiest way possible. Based on the trusted MPVI platform, the RTD4 plugs directly into your vehicle’s OBDII port, transforming your smartphone into a powerful tuning and diagnostic tool.
Key Features & Benefits:
- Wireless Tuning via TDN App (iOS & Android): Flash custom calibration files, send vehicle read files, and manage datalogs directly from your phone. No laptop is required for basic tuning functions!
- Broad Vehicle Support: The RTD4 supports over 300+ vehicle controllers, covering a vast range of HP Tuners-supported vehicles with CAN and VPP protocols.
- On-the-Go Diagnostics: Read and clear Diagnostic Trouble Codes (DTCs) instantly from your mobile device, helping you quickly identify and resolve vehicle issues.
- Tuner IP Protection: Unlike full VCM Suite interfaces, the RTD4 restricts access to VCM Editor, ensuring your tuner’s custom tune files and intellectual property remain secure and uneditable by the end-user.
- Full VCM Scanner Compatibility: For advanced users and diagnostics, the RTD4 is fully compatible with HP Tuners’ powerful VCM Scanner desktop software, allowing for in-depth logging and analysis.
- Pro Feature Set Ready: The device is compatible with the Pro Feature Set (sold separately), enabling features like external sensor inputs (e.g., Wideband O2, boost sensor) via the Pro Link+ cable (sold separately) for comprehensive data collection.
- Future-Proof Connectivity: Includes built-in Wi-Fi hardware (enabled with a future firmware update) for even faster transfer speeds and streamlined data logging.
How It Works:
- Plug In: Connect the RTD4 to your vehicle’s OBDII port.
- Connect: Pair the device to your smartphone via Bluetooth using the free TDN app.
- Read & Send: Follow the in-app instructions to retrieve your vehicle’s stock file and send it to your tuner.
- Flash: Receive your custom tune file from your tuner directly through the TDN app and flash it to your vehicle in minutes.
- Log: Perform datalogs while driving and send the files back to your tuner for review and revision—all from the palm of your hand!
Please Note: The base price is for the HP Tuners RTD4 device only. HP Tuners Universal Credits and Custom Tuning are sold separately and are required to license and tune your vehicle. Please check our related products for tuning packages and credits.
Compatible with many 2023, 2024, and 2025 Ford Models. No PCM unlock or swap required.



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