One more thing -- the tuning seems to be really effective too. It makes a huge difference in the way your car can handle turns. There's an easy mode an an advanced mode where you can adjust brake bia, gear ratios, aerodynamics, tire pressure, suspension, etc. I haven't gotten in to too much because I don't understand the aerodynamics or suspension, but I have customized brake bias and gear ratios and used the easy slider for aerodynamics with great results. It made a huge difference in how well I could handle turns.