Description

This is a specialized, competition-only electronic module designed for the GR86/BRZ (ZN8 platform with FA24 engine). It functions as an essential signal processor for motorsport use. It modifies the vehicle’s speed data output to ensure compatibility and accuracy with professional aftermarket telemetry systems. Additionally, it details specific operational side effects relevant to high-speed track driving.

Product Overview & Motorsport Application

For serious circuit use, precise data is critical. This device solves a known limitation where standard OBD-connected racing equipment cannot accurately display high speeds. It allows professional dash displays, data loggers, and lap timers to receive a corrected speed signal. Consequently, it enables accurate performance analysis and vehicle setup. Correct unit selection is mandatory based on precise vehicle production period.

Technical Function & Critical Operational Effects

• Core Function: Intercepts and reprocesses the vehicle’s speed signal. It overcomes the standard OBD data restriction (capped at 170 km/h), allowing supported aftermarket devices to display the vehicle’s true speed. The factory speedometer remains capable of showing speeds over 180 km/h.

• Vehicle Application: Engineered for the Toyota GR86 / Subaru BRZ (chassis ZN8, FA24 engine). Availability is segmented by precise model year and “Applied Model” version:

  • Applied Model A (2021/10 – 2022/05): Part Number 15256

  • Applied Model B (2022/05 – 2023/11): Part Number 15258

  • Applied Model C (2023/11 – 2024/08): Part Number 15258

  • Separate listings exist for Manual Transmission (MT) and Automatic Transmission (AT) vehicles within each Applied Model.

• ⚠️ Critical Disclaimer – For Competition Use Only & Key Side Effects:

  • This is a competition-only part. It is illegal for road use.

  • Universal Effect for All Models: At speeds exceeding 180 km/h, the gear position display (e.g., “D”, “4”, “5”) will become inaccurate.

  • Specific Effect for Automatic Transmission (AT) Models: A critical transmission control limitation is introduced. At speeds above 205 km/h, the transmission will not be able to upshift from 5th gear to 6th gear. Downshifts and upshifts below 205 km/h remain possible. This is a mandatory consideration for high-speed circuit driving.