For years, HP Tuners has led the way in custom calibration, diagnostics, and data logging. From workshops to weekend enthusiasts, their interfaces have become the go-to link between your laptop and your vehicle’s ECU. Now, the release of the new HP Tuners MPVI4 marks a major leap forward in speed, memory, and connectivity — replacing the trusted MPVI3 as the most advanced tuning hardware on the market.
If you are wondering what’s changed and whether it’s worth upgrading, this guide explains the key differences, what they mean in practice, and how both devices fit into your tuning workflow.
What the MPVI Interface Does
Both the MPVI3 and MPVI4 are hardware interfaces that connect your vehicle’s OBDII port to a laptop running HP Tuners’ VCM Suite software. This combination allows you to scan and diagnose faults, record live engine data, edit calibrations, and flash new tunes directly to the ECU.
Whether you are adjusting fueling maps on a race build or monitoring air-fuel ratios on a street car, the MPVI device acts as the bridge between your vehicle’s brain and your tuning software.
Hardware Evolution: Speed, Memory, and Connectivity
The biggest changes between MPVI3 and MPVI4 are under the hood. The new hardware architecture gives MPVI4 a major boost in speed, data handling, and wireless performance. Here’s a direct comparison of the two interfaces:
| Feature | MPVI3 | MPVI4 |
|---|---|---|
| Processor | Single Core @ 500MHz | Dual Core @ 1.7GHz |
| Memory | 32MB | 1GB (1024MB) |
| Bluetooth | v5.1 | v5.2 |
| Wi-Fi | Not Available | 802.11 a/b/g/n (Up to 150Mbps)* |
| RGB Lights | Single Colour | Multi-Colour |
| OBDII Fitment | Standard Design | Improved Tapered Fitment |
*Wi-Fi functionality will be activated in a future firmware update.
In plain terms, MPVI4 is faster, stronger, and smarter. The dual-core processor and 1GB of memory allow for smoother standalone logging and more stable performance, especially when recording large data sets. These improvements make a real difference during high-speed logging or long diagnostic sessions where MPVI3 could occasionally experience data lag or packet loss.
Improved Data Logging and Bandwidth
One of the most important upgrades in MPVI4 is its standalone data logging capability. With the expanded bandwidth and onboard memory, it can now record at speeds on par with HP Tuners’ VCM Scanner software.
This means fewer jagged graphs, no dropped samples, and much cleaner data — ideal for professional tuners who rely on precise readings for analysis and refinement. You can log more parameters at once, capture faster-changing values, and trust that your logs reflect what’s truly happening in real time.
Connectivity and Fitment Improvements
MPVI4 introduces a new tapered OBDII design that provides a tighter, more secure fit on a wider range of vehicles. This reduces accidental disconnects during tuning or logging sessions and ensures better long-term durability for workshop use.
The new Bluetooth v5.2 offers improved range and stability when pairing with devices, while Wi-Fi support (coming soon via firmware update) will allow faster data transfers and over-the-air firmware updates. This future-ready connectivity ensures MPVI4 will stay relevant as tuning workflows become increasingly wireless.
Compatibility and Workflow
MPVI4 continues to use HP Tuners’ established credit-based licensing system and VCM Suite software.
Both interfaces are compatible with hundreds of supported controllers across thousands of vehicles, including GM, Ford, Dodge, Jeep, Toyota, Nissan, and many others. HP Tuners has confirmed that MPVI4 will also support new and upcoming controllers through regular software updates, meaning it’s built for the next generation of vehicles.
For tuners who work across multiple platforms or model years, this compatibility ensures a seamless upgrade path from MPVI3 to MPVI4 without losing any functionality or access.
Real-World Performance Benefits
In workshop and track settings, the MPVI4’s extra processing power is immediately noticeable. Data logs load faster, connection times are shorter, and overall communication stability is improved. Whether you are reflashing ECUs, capturing sensor data, or diagnosing intermittent issues, the experience feels smoother and more responsive.
Standalone data logging also benefits from the upgraded memory, making it possible to capture longer sessions without a laptop connected — ideal for road testing or motorsport applications.
For enthusiasts who prefer to tune from home, MPVI4’s plug-and-play design and improved fitment make it easier to connect, log, and upload files without the risk of connection loss or corrupted data.
Should You Upgrade from MPVI3?
If you currently own an MPVI3, it will continue to function perfectly with all current HP Tuners software. However, the MPVI4’s hardware advantages make it a strong choice for those looking for faster logging, better connection stability, and long-term software support.
Here’s how to decide:
- Stay with MPVI3 if you are tuning a single vehicle, logging occasionally, or working in stable workshop conditions where speed is not critical.
- Upgrade to MPVI4 if you log frequently, tune multiple vehicles, or want the latest platform with higher bandwidth, more memory, and wireless capability.
In short, MPVI4 is not just an incremental update. It’s a new foundation for HP Tuners’ future hardware, built to handle upcoming vehicle protocols, faster processors, and larger datasets.
Key Highlights of HP Tuners MPVI4
- Dual-core 1.7GHz processor for faster processing and improved responsiveness
- 1GB onboard memory for smoother standalone logging
- Improved OBDII fitment for stronger connection
- Enhanced Bluetooth v5.2 and future Wi-Fi connectivity
- Hundreds of supported controllers across thousands of vehicles
- Fully compatible with VCM Suite and existing MPVI credits
- Modern, future-ready design supporting next-gen firmware
Learn more or purchase here: HP Tuners MPVI4.
The Future of Tuning with VCM Performance
As HP Tuners’ official Australian partner, VCM Performance supports tuners, workshops, and enthusiasts with genuine hardware, local expertise, and technical advice. Whether you are working on late-model muscle, turbocharged street builds, or off-road vehicles, HP Tuners provides the precision and reliability professionals depend on.
For product availability, setup guidance, or tuning support, contact our team at support@vcmperformance.com.au.
FAQs
What is the difference between HP Tuners MPVI3 and MPVI4?
MPVI4 features a dual-core 1.7GHz processor, 1GB memory, improved OBDII fitment, and Bluetooth 5.2. It also includes Wi-Fi capability that will be enabled in a future firmware update. These upgrades deliver faster data logging, better connectivity, and smoother operation.
Does MPVI4 require new credits?
No. MPVI4 uses the same HP Tuners credit system as MPVI3. Your existing licenses and tune files remain valid and transferable.
Can I still use MPVI3 with the latest VCM Suite?
Yes. MPVI3 remains supported by the latest VCM Suite software. You can continue using it for scanning, logging, and tuning as usual.
Is Wi-Fi active on MPVI4 yet?
Wi-Fi functionality is built into the hardware but will be enabled in a future firmware update. Bluetooth connectivity is fully active.
Which interface is best for professional tuners?
Professional tuners who log frequently or work across multiple vehicles will benefit most from the MPVI4’s faster processing, higher memory, and stronger connectivity.