HP Tuners RTD4 OBD-II Remote Tuning Device (ECU Already Unlocked)

If your ECU is already unlocked, the HP Tuners RTD4 is the easiest way to flash custom calibrations, record vehicle data, and receive remote tuning updates without visiting a dyno or tuning shop. Designed and manufactured by HP Tuners, the RTD4 connects directly to your Corvette's OBD-II port and communicates wirelessly with the HP Tuners Tune Delivery Network (TDN), making remote tuning faster, simpler, and more convenient than ever.

Whether you're installing a custom ECU tune for improved performance or logging data for future revisions, the RTD4 provides everything needed to communicate with your tuner from virtually anywhere.

Features

• Genuine HP Tuners RTD4 Remote Tuning Device
• Designed for vehicles with an already unlocked ECU
• Wireless tuning and calibration flashing through Wi-Fi
• High-speed standalone data logging
• Fast transfer speeds for quicker tune uploads and downloads
• Simple plug-and-play OBD-II connection
• Secure, redesigned OBD-II connector for improved fitment
• Works with the HP Tuners Tune Delivery Network (TDN)
• Compatible with thousands of supported vehicles and platforms
• Compact and portable design

Why Choose the HP Tuners RTD4?

The RTD4 allows you to receive custom tuning updates remotely without needing a laptop connected to your vehicle. Simply connect the device, communicate with your tuner through the HP Tuners Tune Delivery Network, and flash updated calibrations directly to your vehicle.

Its improved hardware also allows for faster wireless communication and high-speed data logging, giving tuners the information they need to fine-tune your vehicle for maximum performance.

High-Speed Data Logging

The HP Tuners RTD4 features increased processing power, expanded memory, and higher bandwidth for faster and more detailed vehicle data logging.

Benefits include:

• Record more engine and transmission parameters
• Faster logging speeds
• Improved tuning accuracy
• Better remote diagnostic capabilities
• Performance comparable to many wired logging setups

Easy Remote Tuning

Using the HP Tuners Tune Delivery Network (TDN), your tuner can:

• Send updated calibrations remotely
• Review vehicle data logs
• Make calibration revisions
• Continue optimizing your tune without requiring an in-person appointment

This makes the RTD4 ideal for enthusiasts running custom engine modifications, forced induction, bolt-on upgrades, or flex fuel setups.

What's Included

• HP Tuners RTD4 OBD-II Remote Tuning Device
• HP Tuners Universal Credits (based on selected option)
• USB Cable
• Quick Start Documentation

Vehicle Fitment

Fits:

• 2020 Chevrolet Corvette C8 Stingray
• 2021 Chevrolet Corvette C8 Stingray
• 2022 Chevrolet Corvette C8 Stingray
• 2023 Chevrolet Corvette C8 Stingray
• 2023 Chevrolet Corvette C8 Z06
• 2024 Chevrolet Corvette C8 Stingray
• 2024 Chevrolet Corvette C8 Z06
• 2024 Chevrolet Corvette C8 E-Ray
• 2025 Chevrolet Corvette C8 Stingray
• 2025 Chevrolet Corvette C8 Z06
• 2025 Chevrolet Corvette C8 E-Ray
• 2025 Chevrolet Corvette C8 ZR1
• 2026 Chevrolet Corvette C8 Stingray
• 2026 Chevrolet Corvette C8 Z06
• 2026 Chevrolet Corvette C8 E-Ray
• 2026 Chevrolet Corvette C8 ZR1

Engine Option:

• 6.2L LT2 (Stingray & E-Ray) – 8 HP Tuners Universal Credits

Important Information

• Requires an already unlocked ECU. This device does not unlock your ECU.
• Designed for use with the HP Tuners Tune Delivery Network (TDN).
• Internet access is required for remote tune delivery and updates.
• Universal Credits are vehicle-specific once licensed.
• Compatible with custom remote tuning services using HP Tuners-supported calibrations.