Lethal Performance RTD4 by HP Tuners

The RTD4 (Remote Tuning Device, 4th Generation) is the most advanced remote tuning tool ever offered by HP Tuners — now available in a co-branded Lethal Performance edition. Compact, Bluetooth-enabled, and emissions-compliant, the RTD4 is purpose-built for remote custom tuning on modern vehicles with encrypted ECUs like the 2024+ Mustang GT, Dark Horse, Bronco, Raptor R, and more.

Key Features:

• Fully Wireless: Flash tunes and datalog from your smartphone using the HP Tuners TDN app. No laptop required for the end-user.
• Expanded Vehicle Coverage: Supports 300+ controllers including Ford’s new MG1 encrypted ECUs found in 2024+ vehicles. RTD+/MPVI2 do not support these platforms.
• Faster Flashing: Optimized firmware ensures quicker, more stable flashing than older devices — especially important for frequent revisions.
• Bluetooth + Future Wi-Fi: Connects wirelessly out of the box with Bluetooth; hardware includes Wi-Fi for future updates.
• Cloud-Based Workflow: Tuners send calibration files via HP Tuners’ Tune Delivery Network (TDN); you flash them directly from your phone.
• Seamless Logging: Datalogs are uploaded from your mobile device and sent back to your tuner for review and revision.

Designed for Remote Tuning
Unlike the MPVI3, which supports editing tunes directly in VCM Editor, the RTD4 is locked to tuner-managed workflows — meaning your tuner provides the calibration, and you focus on flashing, logging, and driving. This structure protects intellectual property and streamlines the experience for most users.

Lethal Performance Edition
This co-branded RTD4 features Lethal’s logo and comes with exclusive quick-start support material. Whether your calibration comes from Lund Racing, Palm Beach Dyno, Ortiz Performance, or another Tune Shop partner — this is the hardware that powers it all.

Perfect for:

• 2024–2026 Mustang GT / Dark Horse / EcoBoost 2.3L
• 2021+ F-150, Raptor, Expedition
• 2021+ Broncos, Raptor R, Ranger Raptor
• Most modern Ford platforms with locked MG1 ECUs

Summary:
The RTD4 is the future of remote tuning. If you're tuning a 2024+ Ford with a locked ECU, this is your gateway — a modern, mobile-first solution that combines the performance of HP Tuners with the ease of use today’s enthusiasts demand.

Tuning Process | Tuning FAQ