> You can't exactly just shove a turbo on an under-powerd commuter I4 engine (fuel efficient) and expect it to turn out well.

Isn’t this the exact concept of the VAG EA888 motor used in the Audi A4 and extended all the way up to the S3?

That said, the rumored chip is an actively cooled 12 core 5nm part which is more like an RS3 motor with extra cores/ cylinders