2010 gli we got engine replaced with 1NZFE from a family BMW authorized mechanic. Simply changed the block. Ecu , throttle body, intake manifold , wiring everything is untouched.
Running on 5w30 . 14.8 kmph. Over 15 on motorway full loaded with clutch Wala compressor.
Performace is very nice as the engine we got a absolutely prestine with oem ignition coils. I have images aswell.
Around 2 lakh cost for swap