how does the T/C effect your driving when racing? I imagine for my best times I'd want to turn it off for drag runs, is this true? it's great for driving in the snow and ice but when I first test drove the car it was acting f-ing nuts until I shut it off as I wasn't used to a car trying to tell me how to drive. how does it effect you? do you find yourself shutting it off all the time? can you set it to default off? how does the car behave without it in severe turning ect? is it like having open diffs?