Brakes & pressure
Well, taught a friend to drive stick with the WRX wagon. Afterwards, treated him to some quick launches and "slaloming" around the parking lot, which made me wonder if I could do donuts. So I tried it. The WRX almost did real donuts there. After a tiny bit of doing that, I stopped and turned out across the lot, then hit the brake pedal. The pedal went to the floor without slowing the car at all. I cut the wheel and coasted to a stop, then hit the brake again and got some pressure, so pumped it and got full pressure back.
What happened? Why'd it lose pressure from just donuts? I need to figure it out in case my brother does an autocross like the last one I did...lots and lots of tight turns and if his car is gonna lose pressure when braking, that's not good...