Probably.
But the car still knows how quickly the actual vehicle is accelerating, and if it's out of spec for the type of car it is.
So his'll be trivial for Tesla to catch.
Or, whether there's a voltage drain on the CANbus.
Or, whether the checksum of the message sent across the CANbus is the same as the receiver as the transmitter.
So many different ways to figure out there's something on that bus that doesn't belong.