Unlike companies that distribute maps from a shared library where the same file is used across multiple setups, our tuning process is built around the exact combination of hardware, boost level, fuel type, and performance goals for each customer. This ensures proper drivability, optimized power delivery, and long-term reliability.
No two builds are identical — and our calibrations reflect that.We specialize in remotely tuning your ECU using precise air-fuel ratio data logs to monitor the engine and detect knocks. This custom reflash is tailored specifically to meet your machine's needs, significantly boosting its power and reliability.
RTD4 DEVICE
BRP ADAPTER
4x Credits Reflash license
And you get to Pick any STAGE 1-2-3-4-e85
Sage 1 Plus - 86 mph
Stage 2 - 88 mph
Stage 3 - 90 mph
Stage 4 - 92, 94 mph
Data logging is free
Read and delete code feature is free
Prolink Feature is Free
**ECU NOT INCLUDED
*You need to mail it to HPTuners for an unlocked service. Once it returns, we will handle the tuning using the data logs you provide. It's a straightforward process.
Here is the link 👇🏼
https://www.hptuners.com/product/powersports-mg1-ecm-service/
Get the tool that simplifies custom mapping. With RUTHLESS tuning RTD4 and TDN Phone App, you can find hidden performance, achieve better fuel economy, and monitor your vehicle's most critical diagnostic data.
The RTD4 and TDN App are designed to be user-friendly, offering full support for both iOS and Android platforms.
The RTD4 is not just a tune delivery device; it's a professional support system. It enables customers to send vehicle read files, share data logs directly with their tuner, and receive expert calibration files to flash to their watercraft via the TDN App.
Tune Delivery Network (TDN) is the new standard for remote tune delivery. Send your tuner PWC read files and data logs and receive professional calibration files to flash to your seadoo using the free-to-download TDN app available for iPhone and Android. The TDN app syncs with the RTD device via Bluetooth, removing the laptop from the equation when licensing and writing tunes to your Watercraft
ESPAÑOL:
RTD es un dispositivo de entrega de sintonía. Permite a los clientes enviar archivos de lectura de vehículos y compartir registros de datos directamente a su sintonizador, y recibir archivos de calibración profesionales para actualizar a su embarcación a través de la aplicación TDN.
El RTD ofrece soporte completo para iOS y Android con la aplicación TDN.
Tune Delivery Network (TDN) es el nuevo estándar para la entrega de sintonización remota. Envíe archivos de lectura y registros de datos a su computadora sintonizadora y reciba archivos de calibración profesionales para flashear en su Sea-Doo mediante la descarga gratuita. Aplicación TDN disponible para iPhone y Android. La aplicación TDN se sincroniza con el dispositivo RTD a través de Bluetooth, lo que elimina la computadora portátil de la ecuación al otorgar licencias y escribir melodías en su watercraft
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Sea-Doo: (All models below are compatible with RTD4 only)
- 2024 2025 2026 RXT-X 325
- 2024 2025 2026 RXP-X 325
- 2025 2025 2026 GTX 325
HP Tuners TDN App Setup Instructions
Before You Begin
Please have the following ready:
* HP Tuners RTD interface
* Smartphone (iPhone or Android)
* Stable internet connection (Wi-Fi or cellular)
* Bluetooth turned ON
* Vehicle battery fully charged (recommended to use a battery charger during flashing)
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Step 1 – Download the TDN App
1. Open the Apple App Store or Google Play Store.
2. Search for HP Tuners TDN.
3. Download and install the app.
4. Open the app and create an HP Tuners account (or log in if you already have one). (HP Tuners Docs)
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Step 2 – Pair Your RTD Device
1. Plug the RTD into your vehicle’s diagnostic port.
2. Turn the ignition ON (do NOT start the engine).
3. Open the TDN app.
4. Enable Bluetooth when prompted.
5. Follow the on-screen instructions to pair your RTD device.
6. Allow the app to update the RTD if requested. (HP Tuners)
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Step 3 – Connect to Your Tuner
1. Open the TDN app.
2. Go to Account or Tuners.
3. Enter the Invite Code provided by Ruthless Racing.
4. Verify that you are successfully connected to your tuner. (YouTube)
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Step 4 – Read Your Vehicle
1. Select the FLASH tab.
2. Tap READ VEHICLE.
3. Turn the ignition ON (engine OFF).
4. Press OK to begin.
5. Do NOT:
* Start the engine.
* Turn the key off.
* Disconnect the RTD.
* Walk away with your phone.
6. Wait for the read to complete. This may take several minutes.
7. When finished, verify a green check mark appears next to the uploaded file. If it does not, tap SYNC FILES. (HP Tuners)
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Step 5 – Wait for Your Tune
Once your read has uploaded successfully:
* Ruthless Racing will review your file.
* Your custom tune will be uploaded directly to your TDN account.
* You will be notified when it is ready.
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Step 6 – Flash Your Tune
1. Open the TDN app.
2. Tap FLASH.
3. Select your vehicle.
4. Tap SYNC FILES if your tune is not visible.
5. Select the newest tune file from Ruthless Racing.
6. Tap WRITE VEHICLE.
7. Turn the ignition ON (engine OFF).
8. Press OK and allow the flash to complete.
9. Do NOT:
* Start the engine.
* Disconnect the RTD.
* Turn the ignition off.
10. Wait until the app confirms the write is complete. (HP Tuners Docs)
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Important
* Always keep your phone close to the RTD during reading or flashing.
* Make sure your phone has a good internet connection.
* Never interrupt a read or write process.
* If you experience any issues, contact Ruthless Racing before attempting the process again.
Thank you for choosing Ruthless Racing.
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