This FuelTech adapter harness installs an FT550 ECU on 2024 and newer Sea-Doo models with the Rotax 325 engine, plugging straight into the factory PWC harness. The OEM gauge cluster and iBR (Intelligent Brake and Reverse) stay functional, and two spare connectors give you room for extra FT550 inputs and outputs.
- Plugs directly into the OEM Sea-Doo harness
- Retains OEM gauge cluster and iBR function
- Two spare connectors for additional sensors and actuators
- Options to bundle an FT550 or FT550LITE ECU, igniter and NanoPRO
What else you need
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A FuelTech FT550 or FT550LITE ECU (available as a bundle option)
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A NanoPRO to read and condition the stock Bosch LSU 4.9 O2 sensor (required)
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An external igniter for the stock 325 coils: the OEM 3-channel igniter, or the FuelTech SparkPRO-3 marine version for more spark energy
The ECU, NanoPRO and igniter are not included with the harness-only option.
Installation notes
Contact FuelTech tech support for the latest application-specific software and base tune for the Rotax 325.
FuelTech Sea-Doo 325 2024+ harness manual (PDF)
