Originally Posted by
UselessPickles
I'd be interested to know how the early attempts of the twin turbo design went, and why they decided to go with a single turbo instead. Smaller twin turbos mounted right on the head of the engine would theoretically spool up more quickly, but there would be additional length/volume of of intake piping between the turbos and the intake manifold, which would pressurize more slowly and negate some of the reduced lag properties of the twins.
Then you'd also need extra intake piping going from a single air filter (or air box) location to the inlets of both turbos (edit: guess it wouldn't have to be from a single shared location, but you definitely wouldn't want air filters mounted directly on the turbos down low right next to the engine). All the extra air intake piping would add parts costs and installation complexity (if you can even find a way to route everything through the engine bay). The location of the single turbo layout allows you to just mount an air filter directly on the turbo inlet.
Exhaust piping would be greatly simplified by having twins mounted right onto the engine. It would almost be identical to stock exhaust piping, especially if they used turbos with internal wastegates. This would lower costs and simplify installation on that end.
Lots of competing factors that would need to balance out properly to make twins better than a single turbo. I just hope they went for a reasonably sized single turbo that will have minimal lag and good low-mid RPM response, rather than focusing too much on getting maximum peak power with a bigger turbo.
Waiting for pictures :)