The is an aftermarket external wastegate actuator (often referred to as a "wastegate" or "gate") manufactured by HKS, one of Japan’s most venerable tuning houses. Its primary function is to regulate the boost pressure produced by a turbocharger. Unlike factory internal wastegates, which are often welded to the turbine housing, HKS’s external design allows for more precise, creep-free boost control.
Typically measures 0–100V DC and 0–10A DC .
For high-voltage systems (30V to 100V), use an independent battery or step-down converter to power the module.
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.
[ + Positive Power Source (4.5V - 30V) ] ───────────────────┐ │ [ - Negative Power Source ] ───┐ ▼ │ +─[ LOAD DEVICE ]─+ ▼ │ │ ┌────────────────────────┴─────────────────┐ │ │ │ Thick Black (I-) Thick Red (I+) │ │ │ │ [ HKS-VA028-V2.0 PANEL METER ] │ │ │ │ Thin Black (GND) Thin Red (VCC) │◄──┤ │ │ Thin Yellow (VIN) │◄──┘ │ └──────────────────────────────────────────┘ hks-va028-v2.0
Will you power the meter using an or the same battery being tested?
The introduces three revolutionary changes:
: Monitoring battery health and detecting parasitic drains in off-road or high-performance vehicles.
Usually 0A – 10A (direct) or up to 100A (with an external shunt) The is an aftermarket external wastegate actuator (often
Since is not a publicly listed consumer-friendly part number on HKS’s global or Japanese primary catalogs (as of 2025), it is strongly advised that you:
If you want to know more about similar products or specific applications for this meter, HKS-VA028-V2.0 in your region. Comparison with other digital ammeters. Share public link
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The HKS-VA028-V2.0 uses a . Managing these leads correctly prevents reverse-polarity damage and eliminates ground loop reading skew. Typically measures 0–100V DC and 0–10A DC
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DC 0–10A (most common version includes a built-in shunt).
Tie the (Module Power) and Thin Yellow (Voltage Sense) lines together. Connect them to the Positive (+) terminal of the battery.