The TCU Tiptronic/4 MAP COMMS Kit – Mercury3 is designed to expand the functionality of compatible Mercury3 Transmission Control Units by providing manual Tiptronic gear shifting, 4-Map selection, and a convenient external communications interface.

The kit allows the driver to manually command upshifts and downshifts for a more engaging driving experience while enabling quick selection between up to four programmable transmission maps to suit different driving conditions or performance requirements. The external communications interface provides easy access for TCU tuning, diagnostics, firmware updates, and live data monitoring without requiring direct access to the TCU.

The kit is designed for installation using either the M74 Mercury3 wiring harness, allowing seamless integration into your Mercury3 system while maintaining a clean and professional installation.

Ideal for performance, motorsport, off-road, and custom vehicle applications, the TCU Tiptronic/4 MAP COMMS Kit provides enhanced transmission control, flexible map selection, and convenient communication access for your Mercury3 TCU.