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    ECU Swap on Mercury 9.9 EFI ProKicker to 15?

    So I bought a small pontoon with a 9.9 EFI ProKicker because I was going to use it on a 10 HP limited lake (trailering). Instead, I ended up on a 20 HP limited lake (wet slip), and wish I had a bit more power. The 9.9 and 15 EFI seem identical, except for, I assume the ECU. How hard would it be...
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    ECU for ProKicker 9.9 to 20 HP?

    CORRECTION: 15 not 20 I see vague mentions that converting a Mercury 9.9 EFI ProKicker to 15 (most recent model years, 2021/2022) may be possible by swapping the engine computer? Is this true? If so, can someone point to part numbers? Has anyone successfully done this?
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