Description

The HKS VAC II is a dedicated, plug-and-play electronic module designed to safely and reliably remove the factory-imposed 180 km/h (112 mph) speed limiter on the GR86/BRZ. Engineered to integrate seamlessly with the vehicle’s CAN communication network, it provides a permanent, non-invasive solution that preserves OEM functionality. The VAC II ensures the speedometer continues to read accurately beyond the limit and adds versatility with an analog vehicle speed output signal, all housed in a durable, engine-bay-ready casing.

Product Highlights

🚫 Permanent Speed Limiter Removal
The VAC II electronically intercepts and modifies the vehicle speed signal on the CAN bus, effectively eliminating the 180 km/h speed governor. Unlike an ECU reflash, this function is permanent and unaffected by dealership software updates or ECU resets, providing a persistent solution.

📶 CAN Bus Integration & Accurate Speedometer
By working directly with the vehicle’s high-speed CAN network, the module allows the instrument cluster speedometer to continue displaying the correct speed without “clipping” or freezing at the limit. This maintains full dashboard functionality and driver information.

🔧 Enhanced Reliability & Durability
An evolution of the classic VAC, the VAC II features upgraded internal electronics for improved reliability and longevity. The main unit is housed in a waterproof case, allowing for safe and flexible installation in the engine compartment.

⚙️ Added Utility: Analog Speed Signal Output
Includes an optional vehicle speed signal output line that converts the digital CAN speed data into a traditional analog pulse signal. This allows you to connect aftermarket devices such as GPS-based speedometers, data loggers, or radar detectors that require a vehicle speed input.

Technical Specifications

• Product Name: VAC II (Vehicle Access Controller II)

• Model Code: 45009-AT015

• Compatibility: Toyota GR86 (ZN8) / Subaru BRZ (ZD8) with FA24 engine (October 2021+). Compatible with both Manual Transmission (MT) and Automatic Transmission (AT).

• Primary Function: Removes factory 180 km/h speed limiter.

• Key Feature: Provides analog vehicle speed signal output.

• Construction: Waterproof casing for under-hood installation.

• Installation: Plug-and-play harness connection. Installation Manual (PDF)

Performance Philosophy

• Goal: To provide a simple, reliable, and permanent electronic solution for disabling the factory speed limiter without altering the ECU’s software. The focus is on integration, preservation of OEM features, and added functionality for the enthusiast.

• Focus: A specialized tool for a specific need. It is the ideal choice for track day enthusiasts, owners in regions with unrestricted roads, or anyone who requires an accurate speed signal for auxiliary devices, all without the commitment or potential complications of an ECU reflash.

Installation & Usage Notes

• 🔧 Straightforward Installation
  The module installs via a plug-and-play harness that taps into the vehicle’s CAN network. Professional installation is recommended to ensure proper connection, routing, and secure mounting of the waterproof unit.

• ⚠️ Important Vehicle Behavior Notes

  • Manual Transmission (MT): At speeds above 180 km/h, the multi-information display’s gear position indicator may show an incorrect gear. This is a display-only quirk and does not affect actual gear selection or vehicle operation.

  • Automatic Transmission (AT): A shift limitation exists at very high speeds. The transmission will not upshift from 5th to 6th gear when vehicle speed exceeds 205 km/h. Downshifts and other gear changes operate normally.