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N54 Injector Swap & Coding Diy!
Published by BES335xi
Thumbs up N54 Injector Swap & Coding Diy!

First of all,
Big Thank You to xbox_fan(*.com) for the DIY of swapping the injectors! and vasillalov(e90post.com) for posting a DIY for coding the injectors. without you guys i wouldnt of been able to do this!!!

xbox_fan Injector Swap: N54 INJECTOR SWAP DIY
vassillalov Injector Coding: N54 INJECTOR CODING DIY
Also check out his youtube video below for coding them.

INJECTOR PART# 13537585261


"I only made this thread with a little more detail/wording for people like me that will get frightened to go inside and do it them selves and tried to add some better understanding on what to do or expect when you're taking this project on a DIY, other then that xbox_fan's and vassilalovs DIY are perfectly fine for anyone with a lil bit of mechanical knowledge!!!"

I started getting some hesitation/stumble on low rpm's and the car would feel like i'm misfiring badly, but never threw a code no matter how i drove..i tried going wot i tried doing everything to see if i would throw a code but nothing would happen. I had a BMW tech drive my car, and he even agreed that the car feels/is misfiring. I had my plugs changed few months ago and still the same thing.

So i decided to open up the Engine cover to see which style Injectors i have and as it appeared i had 3 New style injectors Part #13537585261 < Were done under a Recall i had late 2011 together with the hpfp. And i had 3 Old injectors since my car was bought i guess...Clynder 456 had the new ones and 123 the old style ones. Contacted TischerBMW and ordered 3 New Injectors Part #13537585261-09 together with 3 Decoupling Elements Part #13537564751..Always order new Decoupling Elements when you buy a new injector as they come seperate!

So i successfully changed and coded the injectors thank's to the diy's posted above, drove the car last night, drove the car today all day no codes no leaks and most importantly my car feels better, car doesnt feel anymore as its misfiring on my 2nd day of changing the old injectors.
Ok, on to changing and coding the Injectors now.
First i took out the Neg from the battery, not sure if this needs to be done, but i did it since i also needed to route the USB cable for JB4 through the glove box.

Ok now, make sure you have all the tools and INPA fully required/working.

The entire process took me anywhere from 30-1hr, i was just being anal and double checking everything since it was my first time, but now i think i could do it in much less time.

First thing i grabbed a notebook and i wrote down the new Injector numbers and also the old ones as well in case i needed them later.

Ok, now take off the cowl completely and take the engine cover off...

Ok now that the cover is off and we can see our injectors, time to get durrty! lol first i decided to take out the Electric connector then slowly loosen up and remove the metal clip that holds injectors together in my case was 1&2, then slowly removed the fuel line, my car was a bit hot since this was like after i only let my car sit for an hour before i decided to do this, so when i loosened up the fuel rail a bit of fuel sprayed but i quickly put a soft cloth on top of it so it doesnt spray on top of my engine, at first i was scared, but only a bit of fuel sprayed and it just evaporated after anyway...just make sure you have something to quickly cover the fuel line from spraying all over.

Ok, now we're ready to Remove the Injector as i stated in the pic below, mildly moved the injector left and right and forcefully just pulled up and it came out pretty quick without using any tools.

Now that the Injector is OUT, time to get our New Injector and put that Baby IN it's home and let it do her thing lol'.
Simply slide up the Decoupling Element as you seen how it was on the Old Injector when you took out, And take off the CAP from the new Injector so we can install it.

Now put the New Injector In and Push mildly until its sitting flush, see pic below! You can mildly also hit it with the bottom of a screw driver until it's sitting good.
Now that we installed that time to put everything back in reverse and tighten up good, before you put the cover on..Double check you're work! and put the cover on and you're done Installing them.



----------------------------CODING N54 INJECTORS------------------------
Thank's vassilalovs DIY...i suggest you click on his DIY and make sure you have all the files correctly installed to run INPA. And also check his YouTube video for a visual understanding on how to code them in correctly.

I will post the steps in here anyway just so to have 'em all in one thread.

1. Connect USB cable to PC and OBD
2. Push START/STOP button in the Car to turn on the Ignition.
3. Fire up INPA software
4. Make sure both Circles on IGNITION & BATTERY are SOLID Black!
5. In my case also i have an E90 so i select F9
6. Dialog box pops up, Select ENGINE then Select MSD80 (In my case thats what i have again lol)
7. MSD80 Menu comes on and Select F9 again it would/should say "Systemdiagnossen" in german.
8. Another MSD80 menu comes on and Select; EOL-Injektor...SHIFT+F4!
9. Injector Menu comes on and now you're able to see all you're injectors Values, to see if theyre coded correctly or just code the new ones!
10. In my case i changed Injector 1. so i would select F1 for injector one, a dialog box pops up, and now we enter the code in...First we add the first 3 numbers from the injector on the top dialogbox so lets say the number is 582 we would enter 58.2 and then we enter the bottom 3 numbers, let say we have 221, we would enter 2.21 and press Enter. It is okay if the Value changes by -0.1 or +0.1 incase of 2.21 it could change to like 2.20/2.22 It happened to me and a few members that done this numerous time told me that it happens and that is fine and the injectors Are coded in right as long as you punched them in correctly on the dialog box.

And thats it, we're done! Fire up the car and it should be all goody goody!

:happy :drinking:

I only made this thread with a little more detail/wording for people like me that will get frightened to go inside and do it them selves and tried to add some better understanding on what to do or expect when you're taking this project on a DIY, other then that xbox_fan's and vassilalovs DIY are perfectly fine for anyone with a lil bit of mechanical knowledge!!!
Thank's & and i know its not written all perfect and all i just hope it helps someone down the road...had some free time at work and decided i'd make this thread.

PS; Mods if i crossed any lines with linkin' or what not, please feel free to delete or PM me to edit my post. Thx!

Thank you,
JB4+usb | P3 Vent Boost Gauge v2 | BMS OCC | BMS DCI | AMS FMIC | AR xi CL DP's | BT Tool | Edibias/NCSExpert/INPA BMW Coding | Cyba Quad Exhaust tips | M-Tech Rear & M3 Front Bumper | Red Cyba Air Scoops | Blacklines | Vinyl Overlays | ACS Roof Spoiler | Matte Black Grilles | LED Side Mirrors | Rear Euro Fogs | etc..
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By BES335xi on 02-21-2012, 12:30 PM
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For anyone that's good at this or sees that i missed something please post so i can add it in, hopefully this will help someone down the line.
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By zeeman335 on 02-21-2012, 02:10 PM
GREAT writeup! Swapped out and coded the injector myself 2 weeks ago.

One thing to note: Do NOT wait too long to put the new injector in. I heard that after removing the cap from the new injector, that it expands after 10 minutes. So immediately put the new injector in. Dont take of the cap and take a break or something.
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By BADS335 on 04-12-2012, 08:51 PM
Do you NEED to replace the ring for this swap? Seems kinda dumb that if it is required but does not come with it. Almost like buying a spark plug without the washer.
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By Aaroona on 02-13-2013, 01:16 AM
would it be safe to assume this would be the same process (ish) for the N43 engine?

I take it the only difference between the processes would be the physical location of the injectors (may differ slightly), but otherwise coding etc. would be the same?

(Sorry to revive an old thread!)
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By _ink on 07-06-2013, 05:44 AM
Thanks for the info on this thread, I will be tackling this myself next week!

Question around the injector numbers (1-6) how do you know which is which? Is there an image with the injector locations with numbers?
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By _ink on 07-12-2013, 05:55 AM
Thanks for this thread!! Just did the injector swap (all 6) and this was extremely helpful!!!

The only added advice i'd give in removing the injectors is to use a Pick tool, made it alot easier to pull up.
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By miringrains on 07-16-2013, 10:05 AM
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How necessary is the coding? Can I do it, then drive to BMW to get it coded?
Last edited by miringrains; 07-16-2013 at 10:29 AM.
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By JDrago1926 on 07-18-2013, 01:18 AM
What is the most recent injector part #? Also, can I just swap cylinder 6?
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By JDrago1926 on 08-04-2013, 05:45 PM
Just swapped everything out but, my INPA buttons aren't turning black any idea why?
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By ZROFCKSGVN on 08-04-2013, 06:00 PM
Great write up. Thanks!
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By Kish2604 on 08-04-2013, 06:15 PM
Thanks for the DIY, ave me some peace of mind for when I have to do tis work myself and also that my inpa is the same as in the video...
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By Pr335bob on 08-06-2013, 04:23 PM
Hi, I saw your tutorial for swapping injectors! Thanks! Great work! Very helpful. Quick question my cyl 3 injector is out. Does that mean that I have to swap out injectors in 123? Or 135?
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By darth_bimmer88 on 08-07-2013, 04:46 PM
This swap seems really simple and I need to replace a bank of injectors since one is stuck open. I was wondering, are any specialty tools needed during this replacement?



I came across these, but don't see any reference to any special tools in any DIY I've come across.

Thanks for any help!!
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By poyezd on 08-19-2013, 10:59 AM
Don't need any special tools...you'll need an E-10 external star socket to remove the metal clip. To help pull out the injectors I used a small pry bar http://www.harborfreight.com/hand-to...bar-60680.html
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By MikeE90NC on 06-13-2014, 03:22 PM
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I am kind of confused, so I have what is probably a couple of dumb questions to ask. Aside from new injectors what else is needed? Are they pretty much plug and play?

I see that there are injector install kits at ecs that have decouplers/couplers or whatever and small o-rings. Shouldn't the injectors come with at least the o-rings? Could the couplers or whatever theyre called be used from the old injectors? Havent come across much information that goes into detail about this part. I got 3 of the newer ones coming to replace a bank which are probably the old ones and would like to have all the parts and everything I need to know before going in on it.
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By datbimmer on 06-28-2014, 06:35 PM
This guide is very nice and accurate, thanks a lot !
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