MPVI4: Track-Ready Precision

In racing, confidence comes from performance you can measure — and results you can repeat. The ability to not only monitor what a vehicle is doing, but to refine how it performs over time, is what separates consistent drivers from fast ones. That’s why data has always been at the heart of motorsports, from grassroots track days to professional endurance racing. Whether the goal is improving lap times, maintaining consistency over long stints, or balancing outright performance with fuel efficiency, having the right tools makes every decision more deliberate. To support that mindset, HP Tuners created MPVI4, their newest generation OBDII interface built to help drivers, teams, and enthusiasts optimize performance and validate the results. MPVI4 enables precise calibration changes while providing the data needed to confirm improvements — on the straight, under braking, and lap after lap. Whether you’re analyzing sessions between runs, dialing in drivability on a street car, or managing multiple vehicles in a racing program, MPVI4 is engineered to perform where it matters most.

What Is MPVI4?

MPVI4 is the latest OBDII interface from HP Tuners — the hardware that connects your vehicle to VCM Suite, HP Tuners’ scanning, diagnostics, and custom calibration software. Through MPVI4, you can read, edit, write, and log vehicle data with the precision today’s platforms demand. It’s designed for racers and enthusiasts who expect professional-grade performance from every tool they bring to the paddock. MPVI4 integrates seamlessly with VCM Suite 5.2, giving you access to VCM Editor and VCM Scanner — the same software trusted by professional tuners worldwide.

Performance Built for the Track

Racers rely on data. Not noise, not guesswork — real information. MPVI4’s internal architecture is built specifically for situations where accuracy and speed matter.

• Dual-core 1.7GHz processor
• 1GB of RAM — over 30x more memory than previous generations
• Smoother, cleaner logging with performance on par with VCM Scanner
• Integrated Wi-Fi for seamless wireless connectivity and greater speed over bluetooth logging.

This means you get more consistent logs, fewer dropped connections, and faster response times when analyzing a session or reviewing changes made between runs. For the motorsports crowd, that translates to clearer decisions on fueling, airflow, torque modeling, and other parameters that influence how your car behaves on track.

Scan. Diagnose. Tune. Repeat.

The path to speed is repetitive — test, adjust, verify, repeat. MPVI4 fits directly into that workflow.

1. Scan: Use VCM Scanner to capture clean, high-resolution data during a track session, dyno pull, or shakedown run.
2. Diagnose: Identify trends in temperature, throttle response, timing, airflow, and more. Clean data means faster conclusions.
3. Tune: Use VCM Editor to adjust the calibration based on real findings — not assumptions.
4. Repeat: Validate your changes with another log. Measure improvement. Build consistency.

With standalone data logging enabled, MPVI4 can capture extended sessions directly on the device without the need for a laptop in the vehicle. This allows drivers and teams to log full runs confidently, review results between sessions, and focus on driving — not managing hardware.

One Tool for Every Vehicle in Your Program

Most people serious about track driving don’t own just one vehicle. There’s the track car, the tow rig, the daily, the dirt toy, the winter beater — the list goes on. MPVI4 is built for that lifestyle. It supports thousands of vehicles from over 40 manufacturers, giving you one device that works across all the platforms you maintain, drive, or tune. Own a street car you track on weekends? Covered. Run a truck for towing and paddock duty? Covered. Have powersports vehicles for weekend fun? Covered.

Tune all the toys in your garage.

Engineered for Drivers Who Want More

MPVI4 brings HP Tuners’ most advanced technology to the drivers, builders, and teams who rely on consistent, reliable information to make their vehicles better — on the track, in the paddock, or at home in the garage. It’s fast. It’s precise. It’s built for those who want the most out of their vehicle.