KAP x HP Tuners RTD4 Device

Remote tuning has never been this seamless.

The KAP x HP Tuners RTD4 is the latest and most capable OBD2 communication device for remote tuning support — now branded with the KAP Motorsports logo. Whether you're working with us or your tuner of choice, the RTD4 puts full control at your fingertips.

What you can do with the RTD4:

📡 Upload & receive tunes remotely
📊 Datalog your vehicle in real time
🔍 Check & clear diagnostic codes
💾 Store multiple tunes for multiple vehicles

Built for flexibility:
The RTD4 supports a growing list of vehicles, with new applications added regularly. Additional vehicles require credits to pair — check the HPTuners Supported Vehicles list to confirm compatibility for your application.

✅ KAP Motorsports branded
✅ Works with KAP or any HPTuners-compatible tuner
✅ Expanding vehicle support
⚠️ Additional vehicle credits sold separately — purchase credits here