FC123
Quattro Commander
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- 555
Unlikely as the N54 is traditionally the twin turbo engine designation for the current N-generation petrol I6 engines with the N55 being reserved for the twin-scroll single turbo engine. All reports point to this being a twin turbo engine - for now at least.
So as it turns out, the M135i is using the N55. A bit disappointed it's "just producing" 320 hp. Had expected a 1M matching output. Will be interesting to see if a true M1/2 will get something different.