E92 N55 injector coding?

[tr0jan]

Hi fanatics,

My sixth cylinder fuel injector blew out last week. Error p0306 misfire on cylinder 6. I have installed a new plug, and new coil, same error.

I've done a lot of homework in terms of replacing it, and its quite an easy task, besides one unanswered question about the coding.

I see the part numbers for the injector on the N54 and N55 differ. My question now is, do I need to re-code (calibrate) the newly installed injector for the N55? Does the N55 run them individually, or like the N54 1-3 and 4-6 which means one can run lean, and the other rich, and vice versa...

I can find various write ups on the N54 and how to use INPA to do so, but do I need to do this on the N55, or is it pure part replacement and carry on?

The complete lack of any info tells me it might not be needed, but I cannot concretely confirm this.

If anyone has any insight to this, please drop a line here. :ty:

Thanks in advance

 

[akash]

Not sure about N55 but im sure it needs to be coded.

 

[tr0jan]

John @ Leo Haese has made a plan for me to get the injector replaced and coded at a very reasonable price!

 

[zaleonardz]

Its not coded, its called calibrated.

Each injector as it comes out of the factory has different attributes to it.

A machine measures that , and prints 2 values on the injector

See pic below

As you can see from the above, there are 6 injectors all out of the same car, with 6 different numbers on it
First one is 591232
Second is 566242
Ect

Your DME needs to know what those numbers are, so yea you need to write them down, and once installed update the DME with those 6 or 2x3 values

Can be done with INPA on ISTA/d

(Don't I just sound cleva.... I only learned about this last night for my F01 build, on which of course I replaced the DME, and had to input all 8 injectors. Did it this morning, took me about an hour to get to them, 10 minutes to input)