The Legend: The HKS VA028 V2.0 is not just a resistor trick; it is a sophisticated, standalone piggyback fuel controller designed in the golden era of tuning. While modern ECU flashes have largely replaced it, this unit remains a favorite for older platforms (like the MR2, Supra, and RX-7) where OBDII flashing isn't an option or where a standalone ECU is overkill.
This is where most people fail. The VA028 is an Interrupt device, not a "T-Piece" device. It must be installed in-line with the ECU.
Current Range: 0 to 10A DC (typically includes a built-in shunt). hks-va028-v2.0
Adding a digital readout to a custom-built or older analog power supply. Battery Monitoring:
Why should you care about the jump from v1.0 to v2.0? Here are the three main highlights: Optimized Thermal Management The Hacker’s Guide to the HKS VA028 V2
You have two main adjustment modes: Correction % and Pulse Width.
Myth #3: “You can weld the dump tube closed for extra power.” Fact: Absolutely not. Blocking the wastegate outlet will cause catastrophic overboost – your engine will detonate and fail violently. The VA028 is an Interrupt device, not a "T-Piece" device
Introduction
HKS-VA028-V2.0 is a specific hardware revision for a digital DC voltmeter and ammeter