Select any race in any mode. After pressing the X, or Start button immediately Press and Hold down (UP+X+TRIANGLE). To use the Turbo Boost feature simply honk the horn for an instant increase in acceleration. This code is especially helpful if you have been heavily rear ended by an opponent or the usual Police to correct a spin out. Please note that this code will only momentarily let you escape the Police, they will always catch up or be just up the road from you.