I run that outboard on a old MRP 22" tunnel, I use a 60 amp SeaKing, The Mfg suggest 60 to 90 amp ESC. My little old tunnel is not a race boat, I am not pushing its running gear to the max, for just fun sport running on 2s or 3s a 60 amp is just fine for that. With the prop I use, on 2s I get mid / low 20,s, 23 mph gps to be exact. If you're going racing with your tunnel or just wanting to tune it to the max, running much larger than stock props with that motor, then go to a 90 + amp ESC. What little 22" hull you running? good luck.
PROBOAT BlackJack 24", ShockWave 26"
MRP U-31, 3 tunnels VS1, MRP Bud Light, Dumas HS Sprint
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