new BMW N13 from the MINI N18 engine & cold engine startup sound.

[TabbySan]

information from bimmerfest.com:

N18 vs N13 - Bimmerfest - BMW Forums

BMW has introduced 1.6l Prince engine on 116i and 118i in 2011; this Prince engine N13B16,[7] based on Mini Cooper S (N18) engine. Oil filter housing is redesigned to allow longitudinal engine mounting.

Applications:
2011–present BMW 116i, F20 (136 hp version)
2011–present BMW 118i, F20 (170 hp version)

As such F20 engine has same sound as Mini S during startup from cold engine which sound goes away soon.

mini S cold engine startup sound:
[video=youtube;QenijI4A4xg]http://www.youtube.com/watch?v=QenijI4A4xg[/video]

The turbocharger wastegate stays fully open during catalyst warm-up. The N18 motor (2012 and 2011) produces a somewhat loud and nasty rattle noise created by the rotating wastegate valve face. The noise lasts for approximately 30-60 seconds after the engine starts and is audible outside the vehicle. The noise is "considered normal."

The other noise is the direct injection.

 

[leslie11]

Re: new BMW N13 from the MINI N18 engine & cold engine startup sound.

My old Golf has this 'feature' too! My F20 doesn't seem so loud compared to it though.

 

[nonno13]

Re: new BMW N13 from the MINI N18 engine & cold engine startup sound.

Actually i hear this sound from the other BMWs series as well. Just wondering whether this is a common trait for all?

 

[Ah yang]

Re: new BMW N13 from the MINI N18 engine & cold engine startup sound.

Bcos of turbo? 4cylinder engine? Bt i feel tat warming up time is faster then my jap car. Hmm... Tat mini do sound like a taxi. Haha

 

[davidtch]

Re: new BMW N13 from the MINI N18 engine & cold engine startup sound.

Actually i hear this sound from the other BMWs series as well. Just wondering whether this is a common trait for all?

Bcos of turbo? 4cylinder engine? Bt i feel tat warming up time is faster then my jap car. Hmm... Tat mini do sound like a taxi. Haha

It is a common sound for all direct injection engine.

For port injection engine, it is only common for 4 pot BMW.