the turbo's ive driven with it around town and pushing it lightly it really isnt to big of a deal and could have added to the cornering ability but when you strech its legs i just didnt like the feeling of hicas doing its thing. it does switch on and off at speed right? non opp at higher speeds? thats what it felt like anyways and i dont much like selective aids like that. i guess its whatever your used to and prefer, more than anything id say that hicas can get you into more trouble if your really pushing it, could also save you but i just didnt like the feel of the rear end doing its own thing. just my impressions from the little ive driven of hicas cars, both ttz32 and 240sx's.