even hack vs hack is hard because you cant see the hp or tq the opponent has. true, hp part can be solved by putting a hp limit, but i dont think tq changes?
and it also must be hard tuning a hacked car when your hp, tq, drivetrain, weight... varies depending on who, what or where you run.
its a free for all thats hard to regulate and that is why it is no good.
if the details of a hacked car can be seen online publicly then it may work. so at least you know what your up against.