Tuning a Yamaha outboard requires a purpose-built connection between the MPVI3 or MPVI4 interface and the engine control module, since marine ECMs do not use the same connector as automotive OBD-2 ports. The HP Tuners H-001-04 is a 34-pin, style-one adapter built for Yamaha F150 through F350 outboards, with integrated battery clips that keep the ECM powered externally while the engine stays off during a calibration write.

HP Tuners H-001-04 Features:

• Terminates in a 34-pin, style-one connector matched to supported Yamaha F150-F350 outboard control modules.
• Includes integrated battery clips that supply stable external power to the ECM during flashing, since the engine must remain off.
• Connects to an MPVI3 or MPVI4 interface for use with HP Tuners VCM Suite software.

Emissions Disclaimer

HP Tuners designs and manufactures software and hardware tools for vehicle diagnostics, scanning, logging, calibration, and data acquisition purposes. The authorized use of such tools is to bring a motor vehicle into emissions compliance and/or to maintain emissions compliance, as well as for use on competition/racing and other exempted vehicles. HP Tuners does not create or provide tunes or pre-made calibrations.

HP Tuners' Terms of Use, policies, and agreements mandate that users shall comply with all local, state, and federal laws. In using HP Tuners software and hardware tools, you are representing, warranting, and agreeing not to use, employ or allow any HP Tuners tools to operate as a defeat device or to violate emissions compliance in any manner whatsoever. You further represent warrant and agree that the HP Tuners tools shall only be used by manufacturers, calibration businesses, and professionals to develop emissions-compliant and/or exempted calibrations.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART