New turbo technologies: split turbo and 3D printed variable turbo

[dogwhistle]

I had been following Koenigsegg's stuff for a while now as well as the new F1 but completely was oblivious to the split unit idea! That's truly brilliant and leaves me wondering if somebody will come up with a "tunable" split turbo that used engine loads etc to tune the turbo. I also researched rumors a year or two ago where the tubing/housing from the turbo were to change shape or size according to the air flow/rpm much like the tail of a fighter jet expands and contracts in a sense. or a diaphram controlled by pressure. I'll try to find the article but I also read that in a magazine there was tampering of shaft/exhaust driven dual charger units with two cold side blades, and a single hotside with a pulley/clutch and it was supposed to produce the boost quickly with the supercharger draw and then transition to the exhaust driven boost levels/rpm. Pretty neat but nearly quintupled the cost of the unit I'm sure cause it's basically both systems...