Theres a wiring loom going to the throttle body/intake manifold area on my M135i. This loom is similar in size to the entire engine loom that feeds into the ECU of my E36 M3 and on the M135i this is just for the gubbins on the intake.

Ad engine is just an engine.

But theres a hell of alot more things bolted to modern engines as compared to old.

Anyway F10 M5 FTW!

And hopefully nobody will have put too many miles on them all so we can buy warranties for them. lol