A 2.0-liter TFSI from BMW's arch nemesis Audi has been picked. In its raw form, this four-cylinder puts out 265 (old S3 and outgoing TTS, old Golf R), but with a bit of Stage 3 magic it will have somewhere between 340 and 350 hp.
That's not the only affront to BMW engineering. the DQ250 six-speed DSG gearbox is also being installed into the car, together with a limited slip diff and a sequential-style gear stick. As you can see, tens of kilos of wiring and tens of hours of work are going into the car. Doctor Frankenstein would be proud!