depends on driver skill. Some people complain at stage 1 that they cant get traction. Ive driven GTIs putting out over 200fwkw and theyre fine so long as you dont treat the throttle as an on/off switch.

In my opinion the turbo choice really is what makes them driveable or not. A fwd that boosts very hard is much more likely to break traction. Its also important to do the appropriate supporting mods as well. Better suspension tune means more traction.