Ah, but thats not what they can handle, thats more what power people have managed to get their Ed30 up to.
If you after how much power it can handle, as in, still be tractable without Alot of chassis mods id say no more than stage 2+(330-260hp)
Once you go above that, semi slick tyres, LSD etc etc are required, but even then id say its to much.
An S3 or Golf R could probably handle that sort of power, but IMO an Ed30 is seriously going to be flawed at that power purely based on it being FWD.
Doesnt stop the crazy few doing it