Twin Merc 250 fuel burn difference's

[alldodge]

This is my Crapperal twin 250's and the FMS was replaced on starboard because it was burning more fuel than the port. For a couple months all was good, both tracked fairly even. Then the port started burning more fuel than the starboard, not a lot mostly 0.2 GPH on average above 2K to 4K RPM. Above 4K it starts going the other direction, port uses less and starboard uses more.

S/N 3B384246

@muc do you see any issues?

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