N20 Sensor on F10 N55

mfractal

Specialist
Nov 10, 2017
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E90 Sedan LCI 335i FBO MHD E40
I know there's a adapter harness for N54 for use with N20 sensor. Is there any adaptation needed when using it on a F10 n55 ? The plug plugs right in but i've read somewhere that i have to invert the contacts for it to work. Can anyone confirm ?
 

Bnks334

Lieutenant
Dec 1, 2016
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New York
I know there's a adapter harness for N54 for use with N20 sensor. Is there any adaptation needed when using it on a F10 n55 ? The plug plugs right in but i've read somewhere that i have to invert the contacts for it to work. Can anyone confirm ?

I can only confirm re-pinning the stock connection works for "harness type A" PWG N55s. That is the car I did the re-pinning on when I saw the plug fits in but upside down... Not sure what harness the EWG N55's have.
 
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mfractal

Specialist
Nov 10, 2017
77
26
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Ride
E90 Sedan LCI 335i FBO MHD E40
I can only confirm re-pinning the stock connection works for "harness type A" PWG N55s. That is the car I did the re-pinning on when I saw the plug fits in but upside down... Not sure what harness the EWG N55's have.

this is PWG, i inverted the wires but still am getting an error for some reason.

this is after flashing MHD with N20 sensor option

WhatsApp Image 2018-12-05 at 14.34.34.jpeg
 

Alan

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Nov 5, 2016
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Gilbert, AZ
I use the N20 TMAP on my 2013 F10 N55 PWG, no changes to the harness at all, just unplug the stock 2.5 bar and plug in the new 3.5 bar N20. I don't use MHD, but I use a JB4 and it works properly.
 
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mfractal

Specialist
Nov 10, 2017
77
26
0
Ride
E90 Sedan LCI 335i FBO MHD E40
I use the N20 TMAP on my 2013 F10 N55 PWG, no changes to the harness at all, just unplug the stock 2.5 bar and plug in the new 3.5 bar N20. I don't use MHD, but I use a JB4 and it works properly.

This is exactly what we figured out yesterday. Once you flash MHD with N20 option and plug the sensor w/o modifying the harness it all works!

Thanks for your input!
 

mfractal

Specialist
Nov 10, 2017
77
26
0
Ride
E90 Sedan LCI 335i FBO MHD E40
No. First you plug it in and then flash mhd.