How many sensors are there in the minis engine and where are they located?

 

Lots!!

I run a JCW rally car and try to carry most of the common sensors as spare parts.

By "engine" I presume you mean engine and associated parts.

Off the top of my head some of the more common and potentially troublesome ones

• antiknock sensor
• water temperature sensor
• intake air temp sensor
• combined boost pressure / temp sensor
• manifold pressure sensor
• lambda / O2 (multiple)
• crank position
• throttle position / throttle body position
• fuel pressure

There are lots more. If I log on with my software I can monitor dozens of parameters in real time.


Why do you want to know?

 

Cause some time ago i had an issue with loss of power around 4000rpm, there seemed to be loss of overboost, changed the map sensor and all worked back to normal. But i think there are two map sensors... right? One after the turbo and one before

 

There are at least two pressure sensors, at least on mine, which is a euro spec N14 JCW

One is temp / pressure sensor, part 5 on this diagram, post turbo

http://realoem.com/bmw/showparts.do?...06&hg=13&fg=20


Second is inlet pressure sensor, part 10 on this page, pre turbo

http://realoem.com/bmw/showparts.do?...33&hg=11&fg=40

 

Are those two called Manifold Absolute Pressure sensors? Also known as m.a.p?