When the turbocharger reaches its full throttle speed, at around 100,000-150,000 RPM depending on the turbo's type, and the car's engine develops its maximum torque. When this happens the front wheels are overloaded and will have a tendency to spin due to the excess torque applied to them. Their spin is detected by the center differential which will progressively lock and bias engine torque sending the excess torque to the rear wheels thus inducing oversteer. Most people have the wrong impression that 4WD is only of use on slippery roads and conditions. In the first tight corner try extracting the car at the limit of its tires grip and see what happens.
Wheel spin is simply unavoidable.
A front wheel drive car will have its inside wheel spinning and will almost stall in the absence of a self locking differential. The only choice left to its driver is to lift off. A rear wheel drive car will get into oversteer and the driver will have to ease on the gas pedal if he is to avoid exiting the road. A certain time is necessary for a novice before he can master and anticipate the car's reactions. Most examples of full time 4WD turbocharged cars where developed in the sole purpose of competing in the World Rally Championship .