[Mark Yacavone]

I'm pretty sure this won't get mentioned unless I do it, but on an automatic turbo car, a 2 step is a necessity.
As you stall up the converter, the boost comes in, so then the stall speed increases, then more boost and so on ,until the brakes no longer hold . The 2 step caps off that process at a predetermined point, in my case ,about 3800 rpm.