There's a detailed thread on this forum discussing how the battery modules are wired, voltages, inverters, etc... the conclusion seemed to be the current M3 design is maxed out due to the amount of power that can be delivered to the motors.
BTW, isn't this like asking if Ford can make my Fusion go as fast as a Mustang because Chevy released a new Corvette?
BTW, isn't this like asking if Ford can make my Fusion go as fast as a Mustang because Chevy released a new Corvette?