Well whatever you do DONT POWER BRAKE unless you want to make your auto go out quicker. I made the mistake of thinking that it really helps you out. Well it doesnt. The i4 doesnt have a high enough stall speed to make it do anything. The only way to race with an auto is to buy a 5spd. But seriuolsy get a auto teanny cooler for b&m or hayden. leave it in d3 and just smash the gas. Spend 500 bucks and get a lvl ten tc witha higher stall speed.