I tracked my B5 S4 avant, had a hard time keeping brakes together on it. Even with the stoptech BBK it would turn the brake fluid coca cola colored in one day of hpde. Also had to add a huge oil cooler to keep oil temps under control. Other than that I'd say it did fine but it's far from a boxster as track performer. Loads of power but loads of weight will be hard on the tires/brakes.