I learned the brake tap trick racing a 90 Pontiac Grand Am with a quad 4 and bad struts. I'm friggin lucky it work.. Let off the gas tap the brakeswait for the weight of the car to shift forward and then tap the gas to shift the wieght backwards. It takes time to learn to get the timing down but driving over track everyday delivering pizzas for 6 to 8 hours a day it gives you lots of time to practice. At 3 am it's easy to forget little details like the kid was crying when I stopped. Yea he's alreadt talking trash about me