[m balla]

>= 150hp/liter

That's c-x75 and veyronSS territory and half way to F1 territory.

Now...

Could still be lighter than s65 and makes way more power per liter. It is sad to talk about hp/l on boosted car though still impressive nontheless.

Case 1. it has dual twin/single scrolls and a third larger single/twin scroll for top end (this could be airbox on left feeder)....

Case 2. Electric super is only for instant bottom end (stil could have it). And then two larger twin scrolls.

Case 3. Could be n54 turbo setup and best practices applied to n55 w.n20 tech thus having dual twin/single scroll turbos, one small, one bigger for bottom and middle with a third larger turbo for top end.

Case 4. Triple scroll single turbo and combo of previous.

Case 5. BMW petrol version of triple turbo diesel.

Case 6. The third turbo is feeding the input brought through the a2a intercooler and then through the a2w for the dual twin/single scrolls.

So if it's a heavily modified n55 block of aluminum w HDE injection and improved valvetronic for better top end this truly could be an amazing engine. It defintely is pushing fatter tires.