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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Dealership lost. Unique injector calibration problem. Need info



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      01-20-2013, 06:19 AM   #1
MAC335i
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Question Dealership lost. Unique injector calibration problem. Need info

Long story short:

I went WOT in 4th gear and the car felt like it misfired instantly. Barely hit full boost. I pulled over to restart the car and after restart it kept idling very rough and sounded like a subaru. I restarted and even waited between restarts and it would'nt reset like a normal misfire. Car sounded bad and and I figured it was undriveable. So, I towed it to the dealership.

They pull data off the car and send it to BMW and BMW responds with: the injector calibration values have all been reset to 0 (wtf?) They say there is no way this could happen without external interference (tampering, putting a tune in). And because they "know" this could never happen without someone messing with the electronics, they say my warranty if void for this repair.

My option:
Wait for a head BMW engineer to come connect his software to the car (some software that has access to thousands more parameters than the dealers can, so they say) and he will be able to find out if I ever had a tune installed. If they find nothing, then I will be covered 100%.

My question:
Does anyone know anything about what they are talking about? Any knowledge of how the calibration values (when you code injectors to your car) got reset to 0 while driving the car??

Looking for any help I can get in this situation. I searched for a couple days looking for anything similar to this and I couldnt find 1 thread.

Thanks a lot in advance.
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      01-20-2013, 07:33 AM   #2
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What tune have you been using?
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      01-20-2013, 09:07 AM   #3
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Did you tell them to recode that injector?
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      01-20-2013, 01:08 PM   #4
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Were you able to pull any codes before you took it to the dealer?
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      01-20-2013, 02:45 PM   #5
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I can't think of ANY tune that has the ability to re-write injectors coding. My guess is their dumbasses didn't code the injectors properly when/if you ever had an injector recall on that car.

Also, the car will generally run fine without the injectors coded, but just not at optimal levels.
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      01-20-2013, 03:08 PM   #6
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If you had the injectors relaced and then this happened then the dealership never coded the injectors.
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      01-20-2013, 05:56 PM   #7
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tell the dealership to blow off. take car home, plug in laptop, load INPA, and code injectors for free, maintain warranty. grab a beer, and relax.

what worry is there?

at this point, who cares who did or didn't code the injectors right. what matters now is dealing with the runaround with the dealership, which you don't have to, if you just follow what i told you
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      01-20-2013, 07:39 PM   #8
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Quote:
Originally Posted by Ovitrix335
Did you tell them to recode that injector?
Thats exactly what I told them to do. I asked them why dont they recalibrate the injectors and see if the car runs good after that. Because right now it runs terrible. Undrivable. Sounds like it is running on 4 or 5 cylinders.

Quote:
Originally Posted by caliguy562
Were you able to pull any codes before you took it to the dealer?
no I dont have any codes. They didn't mention finding any codes either but I will be sure to ask them what codes came up.

Quote:
Originally Posted by joec500
I can't think of ANY tune that has the ability to re-write injectors coding. My guess is their dumbasses didn't code the injectors properly when/if you ever had an injector recall on that car.

Also, the car will generally run fine without the injectors coded, but just not at optimal levels.
My thoughts exactly. No tune on the market can do that. People wouldnt download INPA and code their injectors if the tune could do it.

You say the car will run fine without the injectors coded? The dealer thinks this is the reason it is running poorly and misfiring. They want to replace all 6 injectors and 6 spark plugs and recalibrate them. They think that will fix everything. Beyond that, they think something may be wrong with the DME if that doesnt fix the problem.

I have always had issues with my injectors and fueling. I wonder if they were miscalibrated this whole time which caused them to fail prematurely.

Quote:
Originally Posted by Ćnema
If you had the injectors relaced and then this happened then the dealership never coded the injectors.
I have never had the injectors replaced during my ownership. I didn't see any BMW records of the previous owner getting a recall either. The car was built in 2006 with an in-service date of 1/30/07.

Quote:
Originally Posted by nukezero
tell the dealership to blow off. take car home, plug in laptop, load INPA, and code injectors for free, maintain warranty. grab a beer, and relax.

what worry is there?

at this point, who cares who did or didn't code the injectors right. what matters now is dealing with the runaround with the dealership, which you don't have to, if you just follow what i told you
I dont have the cable and have never tried to follow the DIY to get the software working. I know a shop where I can get the injectors coded with the Autologic.

Last edited by MAC335i; 02-02-2013 at 01:11 AM.
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      01-20-2013, 07:49 PM   #9
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I really want the BMW engineer to come hook up to the DME and not be able to find anything. Then I will be covered 100% and all I have to pay is the $50 deductible for CPO warranty.

Vishnu guys: What could they possibly find on there? Is my DME gonna be clean??

Also, looking for more info on if the car will run fine if the injector calibration is set to 0. They won't recalibrate the injectors currently in the car without me paying. But if they recode them and the car still runs like shit, that must mean one or more of my injectors has completely failed... Why else would it be misfiring constantly while just idling?

Thank you sooo much for the help guys! I really hate to have my car just sitting at the dealer not running. Lets get her back on the road! lol
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      01-20-2013, 08:10 PM   #10
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The car runs like shit without coded injectors..so the issue existing before now isn't really possible either.
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      01-21-2013, 12:25 AM   #11
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If the dealership will recalibrate your injectors you should be fine. Too bad you don't have the INPA+cable you could of done it yourself. Hopefully is nothing wrong with your DME.
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      01-21-2013, 08:25 AM   #12
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I also have Rev 2.5 and have had my injectors replaced and recoded. The values stored in the DME were exactly as imprinted on the injectors.

Quote:
Originally Posted by Pankakez & BMWs View Post
I dont have the cable and have never tried to follow the DIY to get the software working. I know a shop where I can get the injectors coded with the Autologic.
Quote:
Originally Posted by Pankakez & BMWs View Post
I really want the BMW engineer to come hook up to the DME and not be able to find anything. Then I will be covered 100% and all I have to pay is the $50 deductible for CPO warranty.

Vishnu guys: What could they possibly find on there? Is my DME gonna be clean??
If the BMW engineer hooks up to your DME they will probably discover you are tuned......game over. So don't go that route.

Get your injectors coded through the Autologic shop (I used a private shop to calibrate mine) and also verify if BMW is telling you the truth about no coding. I find that hard to believe that there would be no coding. Even if injectors were replaced and they forgot to code the new ones, the old codes would still be there.

Read your codes and see which cylinders are misfiring then consider changing the injectors on those cylinders yourself or via your Autologic shop which can also code them in for you.

If your car is that old, chances are one or some of the injectors have failed by now and are behind your driveability issues.

I seriously think the dealer is pulling your chain because they suspect you are tuned and want to flush you out.
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      01-21-2013, 09:18 AM   #13
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Sometimes when a shop fubars the injector coding and its not done right it will show up as a exclamation point when the values are read. I would think the dealer that did the original Injectors what ever software they used messed it up bigtime with the coding with the software they used in the dealer. If coding was done properly there is nothing that can just reset the values that were inputed. Those values are hard coded to DME and even if battery was disconnected the values would still stick.
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      01-21-2013, 09:17 PM   #14
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Quote:
Originally Posted by Ilma View Post
I also have Rev 2.5 and have had my injectors replaced and recoded. The values stored in the DME were exactly as imprinted on the injectors.





If the BMW engineer hooks up to your DME they will probably discover you are tuned......game over. So don't go that route.

Get your injectors coded through the Autologic shop (I used a private shop to calibrate mine) and also verify if BMW is telling you the truth about no coding. I find that hard to believe that there would be no coding. Even if injectors were replaced and they forgot to code the new ones, the old codes would still be there.

Read your codes and see which cylinders are misfiring then consider changing the injectors on those cylinders yourself or via your Autologic shop which can also code them in for you.

If your car is that old, chances are one or some of the injectors have failed by now and are behind your driveability issues.

I seriously think the dealer is pulling your chain because they suspect you are tuned and want to flush you out.
First off: To clarify for others, the injectors, as far as I know, are the original equipment on the vehicle. No injector swaps with fubar coding. The car has never been coded, as far as I know.

Hey Ilma thank you very much for your reply.

Please elaborate more about this. What do you think the BMW engineer is going to find? This come as a surprise to me because Rob from Vishnu told me that my DME should be spotless.

They do claim that the injector calibration has been cleared during operation of the vehicle. I cant explain that either. But it is what they are saying happened. I definitely think I am going to take the car from the dealer and check if there really are values of 0.

To recode my injectors, it is ok to un-install them to read the values from the injector? And then reinstall with the same PTFE seal and decoupling element?

And finally, if one or more of the injectors is just completely done, would the car still run? I have gotten a yes to this question from a couple people but I just want to make sure.

Thanks again for the help. Hope to get this resolved soon.
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      01-21-2013, 09:19 PM   #15
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I can't understand how you could code injectors improperly. It's freaking idiot proof! Sorry, had to say it.
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      01-21-2013, 10:24 PM   #16
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Hi there.

I had the same exact situation happen to me 1.5 year ago, raced a cts v and after taking a brief break cruising he waved to go at it again, I downshifted to 4th and barely got to build any boost before I misfired, took the next exit and stopped at a gas station after 3 failed restart attempts I took it to my mechanic with the scoobie boxer sound and Check engine light. The outcome??? A fried/Blown mere Ignition Coil, replaced and all was good to go.

Who knows, maybe they are screwing with you and it is not your injectors at all....!

Good luck

Last edited by GreekMaverick; 01-21-2013 at 10:34 PM.
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      01-21-2013, 10:28 PM   #17
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Quote:
Originally Posted by themyst View Post
I can't understand how you could code injectors improperly. It's freaking idiot proof! Sorry, had to say it.
Do u really want an answer to this question with some of these clowns that work at the dealership!
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      01-22-2013, 01:42 AM   #18
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Quote:
Originally Posted by themyst View Post
I can't understand how you could code injectors improperly. It's freaking idiot proof! Sorry, had to say it.
Its not that they coded them wrong.

They say the car was like that when they pulled data off the DME.

So weird....
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      01-22-2013, 01:43 AM   #19
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Quote:
Originally Posted by GreekMaverick View Post
Hi there.

I had the same exact situation happen to me 1.5 year ago, raced a cts v and after taking a brief break cruising he waved to go at it again, I downshifted to 4th and barely got to build any boost before I misfired, took the next exit and stopped at a gas station after 3 failed restart attempts I took it to my mechanic with the scoobie boxer sound and Check engine light. The outcome??? A fried/Blown mere Ignition Coil, replaced and all was good to go.

Who knows, maybe they are screwing with you and it is not your injectors at all....!

Good luck
Thank you for this response. That sounds very similar to what happened to me. I'll definitely check the coils.
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      01-22-2013, 08:05 AM   #20
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Quote:
Originally Posted by Pankakez & BMWs View Post
First off:

Hey Ilma thank you very much for your reply.


To recode my injectors, it is ok to un-install them to read the values from the injector? And then reinstall with the same PTFE seal and decoupling element?

And finally, if one or more of the injectors is just completely done, would the car still run? I have gotten a yes to this question from a couple people but I just want to make sure.

Thanks again for the help. Hope to get this resolved soon.
It is not recommended to use the same seal once the injector is removed....although some have done it.

But You don't need to remove the injectors to read the coding numbers. Just take off your engine cover and you can read the calibration numbers stamped on the side of the injectors with them still in place.

If an injector is bad it may still operate but give you poor performance at times such as misfires stumbling rough idle etc.

Sometimes the injector gets stuck wide open and then you cannot drive the car without flooding your cylinder, but you would see a lot of smoke out your tailpipe if that was the case.

If you are going to a mechanic who has an autologic scanner, then he will be able to read your injector codes very quickly and verify what BMW is telling you.

Have you pulled any misfire codes which would indicate which cylinder is misfiring?
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