Article: Watch the 2015 BMW F82 M4 smack the B8 Audi RS5 around on the roadcourse and laugh at Quattro

[andrew20195]

I think with variable geometry turbos, an electric motor spinning up the turbo shaft, and the right turbos they can get close.

Twin turbo plus MGU-H would be an expensive, complex system, although I think one electric hybrid turbo with the right control strategy would eliminate any concerns of soft throttle response.