Yes, I've done it on the ED30 and my last regular GTi, with the GTi it completely stopped the wheel hop that you talk about even though it was running APR stage 2 and making 262bhp, but with the ED30 it must asking that bit to much, although its helped a great deal its not stopped it completely.
I can't say I've noticed any increase in cabin noise or vibration with either car and for the cost I think its a real worthwhile mod.