GreenNuggs:
Besides, TT setup would not really give any more HP than a single T. You can only turn up the boost so far and I suspect the HPP turbo will be set between 6-10psi which is easily attainable by a single turbo of moderate size.
The idea behind this is not more power, it's better responsiveness. A single turbo is sometimes effective enough that the power kicks in around 2300-3200 RPM, but in this particular scenario, the turbos are ready to go around 1600 RPM, and in a CSVT, you're there in a hurry.
.RMk..
