Had the ASC+T turned off. Interesting thing is that it screws up your handbrake turns. Rear wheels are stationary, front wheels are spinning, natural reaction is to think whell spin and the next thing you know there's no power coming out of the turn!
Only tried running without ABS during the last event. Helped when attacking the finish garage where you would occasionally snatch a brake, and ABS would usually make you roll straight through the end of the garage. Driving without ABS made the brakes feel stronger, and gave me more confidence.