Description

This product line consists of specialized, competition-only electronic modules engineered for the Toyota GR Corolla. Designed for exclusive use in motorsport environments, these units modify the vehicle’s speed signal to achieve specific data output goals critical for professional racing telemetry, while detailing consequential effects on vehicle systems at high speeds.

Product Overview & Motorsport Application

For circuit competition and performance testing, accurate vehicle data is paramount. These Speed Jumper variants address the GR Corolla’s electronic interface, ensuring that aftermarket racing dashboards, data loggers, and timing systems receive a corrected and usable speed signal. This allows for precise lap analysis, tuning, and performance validation in closed-course settings. Selection is critical and depends on production date and intended data outcome.

Technical Function & Application-Specific Details

• Core Function: Processes the ECU’s digital speed output. Designed to either correct a standard OBD data limitation or create a specific signal offset, ensuring compatibility and accuracy with professional motorsport electronics.

• Vehicle Application: Developed for the Toyota GR Corolla (chassis GZEA14H, G16E-GTS engine). Compatible units vary by production period:

  • For models produced 2022/12 – 2025/03:

    • Part 15257: Creates a deliberate offset where OBD device speed differs from actual speed. Factory meter displays >180 km/h.

    • Part 15260: Corrects the standard OBD limit, enabling devices to display speed above 170 km/h. Factory meter displays >180 km/h. Side Effect: Navigation position becomes inaccurate above 180 km/h.

  • For models produced from 2025/03 onward:

    • Part 15260 (MT Specific): For Manual Transmission vehicles only (AT unconfirmed). Corrects OBD limit (unlocks >170 km/h display). Factory meter displays >180 km/h. Side Effect: Navigation position becomes inaccurate above 180 km/h.

• ⚠️ Critical Disclaimer – For Competition Use Only:

  • All variants are explicitly competition-only parts. Illegal for road use.

  • The noted side effect—inaccurate navigation system vehicle position at speeds exceeding 180 km/h—is an expected and accepted compromise for circuit driving.

  • Installation and use are confined to sanctioned racetracks, time-attack events, and dynamometer testing.