The boost controller is your friend... it's not that hard to successfully bracket race one of these and have it repeat.
But I do LOVE to hear the theory's from the keyboard jockeys about why it can't work.
Trust me this guy can bracket race a turbo car. I not only have seen him do it but he did it in two classes being ran back to back. The only thing that failed him was the transmission over-heated and I'm sure he addressed that issue.