Which MGM do you have? The 25035 or 25063? 7500W on 8S per side is quite a bit of current. The peak amps are phase currents which give you some indication the ESC is working rather hard pushing those motors. The 63 series ESC's tend to very thermally safe and limit current quickly to protect against failure. I have a lot of experience with these and know the 28026 and 25035 will actually push harder than the larger 25063.
Although the current limiting is inevitable with these ESC's, providing extended cooling will help. I would recommend an additional electric water pump that can circulate coolant when you pause in between runs.
TG
Tyler Garrard
NAMBA 639/IMPBA 20525
T-Hydro @ 142.94mph former WR
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