Hey, fellow gearheads and tuning wizards! If you've been knee-deep in the world of ECU remapping, diagnostics, and unleashing hidden horsepower from your ride, you've probably got an HP Tuners MPVI3 tucked away in your toolkit. It's been a beast – fast, reliable, and packed with features that made it the gold standard for pros and DIYers alike. But here's the buzz that's got the automotive forums lighting up: HP Tuners has officially pulled the plug on the MPVI3, calling it discontinued as of late 2025. Why? Because they've just dropped the **MPVI4**, a next-gen OBDII interface that's not just an update – it's an overhaul designed to make your tuning sessions quicker, smarter, and more seamless.
In this post, we're diving into why the MPVI4 is the must-have replacement, breaking down the key upgrades over the slower, now-retired MPVI3, and why it's time to upgrade if you're still clinging to that trusty old cable. Buckle up – this one's for anyone chasing that perfect dyno run or street-legal sleepers.
But as tech marches on, so do the demands of modern vehicles – think denser ECUs, higher data throughput for complicated systems, and the need for even snappier wireless integration. HP Tuners announced the MPVI3's discontinuation and made a push toward even more advanced hardware.
Enter the MPVI4: faster, tougher, and tuned for the future.
Why the MPVI4 is the Perfect Replacement: Key Features That Crush the Competition
The MPVI4 isn't just "MPVI3 with a facelift" – it's engineered from the ground up for higher performance in all aspects.
1. Turbocharged Speed: Say Goodbye to Wait Times
- The MPVI3 was quick, but the MPVI4 dials it up with faster read/write speeds
- Standalone data logging? Now higher resolution.
2. Smarter Diagnostics and Expanded Support
- More storage, means room for more logs and calibrations than the MPVI3's – perfect for long-haul data hauls on road trips or endurance races.
- The MPVI4 isn't just faster – it supports the newest platforms and vehicles.
3 Time to Upgrade: Don't Get Left in the Slow Lane. Technical specifications below:
MPVI3 MPVI4
Processor Single Core @ 500MHz | Processor Dual Core @ 1.7GHz |
Memory (RAM) 32MB | Memory (RAM) 1GB (1024MB) |
Bluetooth v5.1 | Bluetooth v5.2 |
Wi-Fi Not Available | Wi-Fi 802.11 a/b/g/n (up to 150Mbps, with future firmware update) |
OBDII Fitment Standard Design | OBDII Fitment Improved Tapered Fitment |
Indicator Lights Single Color RGB | Indicator Lights Three Multi-color RGB |