Late E-Series N55 MEVD1726 DME Removal/Benchflash Guide

Toome · 10-23-2017, 05:36 PM

With MHD officially out of beta for (2012+) late E-Series cars, more people want to unlock their ECU's. I have attached a guide I made on how to remove the DME in order to ship it off to be unlocked for those in remote locations or for those who'd rather turn their own wrench.

ECU Removal:
https://docs.google.com/document/d/1...it?usp=sharing
Benchflash:
https://docs.google.com/document/d/1...it?usp=sharing

Please feel free to point out any errors or suggest changes.

BMWcurious · 10-24-2017, 03:29 AM

Good guide. I tape over the intake ports whilst the intake manifold is off.

Wksk · 10-24-2017, 05:44 PM

Wow, you actually made the guide. Very nice. I 2nd bmwcurious' post. I used those blue shop towels to plug mine.

Toome · 10-24-2017, 06:57 PM

Quote:

Originally Posted by Wksk

Wow, you actually made the guide. Very nice. I 2nd bmwcurious' post. I used those blue shop towels to plug mine.

Took a while but finally got around to it.

I listed that as a step but forgot to take a picture of it.

robrxt · 10-26-2017, 08:52 PM

Quote:

Originally Posted by Toome

With MHD officially out of beta for (2012+) late E-Series cars, more people want to unlock their ECU's. I have attached a guide I made on how to remove the DME in order to ship it off to be unlocked for those in remote locations or for those who'd rather turn their own wrench.

I will update this thread with another guide on how to do the actual bench flash later.

Please feel free to point out any errors or suggest changes.

Looking forward to the post of how to bench flash and unlock the DME. I want to do this. Thanks!

BMWcurious · 10-27-2017, 03:41 AM

Main points on opening are to use a blade with an exposed length that will only just cut through the sealant and not hit components. I also put mine in the oven at 100C for 15 minutes first. Avoid static by grounding yourself and the ECU at least briefly before connecting the boot pin if like me you use an actual pin and grips on the table so you are effectively touching the boot pin. http://f80.bimmerpost.com/forums/sho....php?t=1264155

nissubaru · 10-27-2017, 09:00 AM

N54 guy over here seeing this thread for the first time...what? Is your DME no longer in the cowl on the passengers side? But instead it's under the intake manifold?

Interesting seeing such a change. Just out of curiosity, what is over there under the passenger side cowl on the N55 if not the DME box?

weehe126 · 10-27-2017, 09:51 AM

Quote:

Originally Posted by nissubaru

N54 guy over here seeing this thread for the first time...what? Is your DME no longer in the cowl on the passengers side? But instead it's under the intake manifold?

Interesting seeing such a change. Just out of curiosity, what is over there under the passenger side cowl on the N55 if not the DME box?

Yes, all N55 DMEs are under the intake manifold. There is a heat sink in the manifold to help keep the DME cool. The box under the cowl is still there, just has a few wires and fueses.

Xdrive35i2014 · 11-02-2017, 11:25 PM

Thanks for the guide! Any updates on the actual bench flashing guide?

Toome · 11-02-2017, 11:31 PM

Quote:

Originally Posted by Xdrive35i2014

Thanks for the guide! Any updates on the actual bench flashing guide?

Should be done next weekend. Sorry for the delay, I've been out of town.

Xdrive35i2014 · 11-09-2017, 11:48 PM

Quote:

Originally Posted by Toome

Should be done next weekend. Sorry for the delay, I've been out of town.

Hey Toome, any updates?

Toome · 12-09-2017, 03:04 PM

Sorry for the delay, but I finally updated the OP with the Benchflash Guide. Still a work in progress so don't be afraid to suggest changes. Feel free to PM me if you have any questions.

Schmidty335i · 03-02-2019, 08:07 PM

Quote:

Originally Posted by Toome

With MHD officially out of beta for (2012+) late E-Series cars, more people want to unlock their ECU's. I have attached a guide I made on how to remove the DME in order to ship it off to be unlocked for those in remote locations or for those who'd rather turn their own wrench.

ECU Removal:
https://docs.google.com/document/d/1...it?usp=sharing
Benchflash:
https://docs.google.com/document/d/1...it?usp=sharing

Please feel free to point out any errors or suggest changes.

YOU SIR ARE AWESOME!! i followed your instructions and was able to unlock my DME! got the ktag for 60 bucks then i paid 199 for mhd loaded the JB4 BEF and it is running like a champ! thanks again for making this DIY! i would have sent it off otherwise and had to wait.

BTW if anyone is by Ridgecrest California and needs help just message me.

Turbod · 03-29-2019, 04:28 PM

Has anyone that has done this run into issues after bench flashing the DME? I have 4 codes that I cannot clear and the half engine light. Looking up code descriptions isn't always easy but from what I found most seems to relate to throttle valve.

28B0
28AB
28A4
28A9

ferocity02 · 04-08-2019, 11:08 PM

Quote:

Originally Posted by Turbod

Has anyone that has done this run into issues after bench flashing the DME? I have 4 codes that I cannot clear and the half engine light. Looking up code descriptions isn't always easy but from what I found most seems to relate to throttle valve.

28B0
28AB
28A4
28A9

Did you remember to plug the throttle body back in?

ferocity02 · 04-08-2019, 11:11 PM

Remember to clear codes on the DME before trying to start it for the first time. I didn't and the car ran like dog shit, couldn't idle, loud as hell (wastegate wide open). The code was 36FD "DME main relay, plausibility: prematurely dropped out". After clearing it ran perfectly fine.

Turbod · 04-08-2019, 11:39 PM

Quote:

Originally Posted by ferocity02

Did you remember to plug the throttle body back in?

I was positive I deleted my post. Yes the throttle body wasn't plugged in.

Snowboardkid503 · 04-05-2020, 01:26 PM

would this happen to work for F15 X5 35i, the unlock exe?

Toome · 04-12-2020, 06:43 AM

Quote:

Originally Posted by Snowboardkid503

would this happen to work for F15 X5 35i, the unlock exe?

Go on RealOEM and make sure the ecu part number matches an e92 335 from 2011-2012.

Snowboardkid503 · 04-13-2020, 07:24 PM

Quote:

Originally Posted by Toome

Go on RealOEM and make sure the ecu part number matches an e92 335 from 2011-2012.

I ended up trying and worked

robrxt · 04-13-2020, 07:48 PM

Quote:

Originally Posted by Snowboardkid503

I ended up trying and worked

I was under the impression that bench flashing DME was no longer needed to flash MHD.

Toome · 04-14-2020, 02:21 PM

Quote:

Originally Posted by robrxt

Quote:

Originally Posted by Snowboardkid503

I ended up trying and worked

I was under the impression that bench flashing DME was no longer needed to flash MHD.

Not for the 2012-2013 E series N55's. Unlock is still required.

10-23-2017, 05:36 PM	#1
Toome Member 159 Rep 269 Posts Drives: 2012 E92 335i M-Sport Join Date: May 2017 Location: San Diego, CA iTrader: (0) Garage List 2012 BMW E92 335i [0.00]	Late E-Series N55 MEVD1726 DME Removal/Benchflash Guide With MHD officially out of beta for (2012+) late E-Series cars, more people want to unlock their ECU's. I have attached a guide I made on how to remove the DME in order to ship it off to be unlocked for those in remote locations or for those who'd rather turn their own wrench. ECU Removal: https://docs.google.com/document/d/1...it?usp=sharing Benchflash: https://docs.google.com/document/d/1...it?usp=sharing Please feel free to point out any errors or suggest changes. __________________ 12’ E92 335i 6AT - Alpine White M-Sports Package Mods - \| MHD Stage2+ ACN91 OTS Map \| K&N Drop-in \| VRSF Kittenless D0wnpipe \| VRSF CP \| VRSF 7” FMIC \| xHP Stage 3 \| Euro Headlight Switch \| Avant Garde M359 \| Michelin PS4S Last edited by Toome; 12-09-2017 at 04:02 PM..
	Appreciate 7 Turbod395.50 FireBlaze67.00 Wksk78.50 Xdrive35i201456.00 houtan707.00 socal330i4.00 Schmidty335i42.00 Tweet Quote

10-24-2017, 03:29 AM	#2
BMWcurious Private First Class 227 Rep 182 Posts Drives: Various BMWs Join Date: Apr 2013 Location: St Andrews iTrader: (0)	Good guide. I tape over the intake ports whilst the intake manifold is off.
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10-24-2017, 05:44 PM	#3
Wksk Second Lieutenant 79 Rep 247 Posts Drives: 2013 335i e92 6spd goes vroom! Join Date: Sep 2016 Location: Florida iTrader: (0)	Wow, you actually made the guide. Very nice. I 2nd bmwcurious' post. I used those blue shop towels to plug mine.
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10-27-2017, 03:41 AM	#6
BMWcurious Private First Class 227 Rep 182 Posts Drives: Various BMWs Join Date: Apr 2013 Location: St Andrews iTrader: (0)	Main points on opening are to use a blade with an exposed length that will only just cut through the sealant and not hit components. I also put mine in the oven at 100C for 15 minutes first. Avoid static by grounding yourself and the ECU at least briefly before connecting the boot pin if like me you use an actual pin and grips on the table so you are effectively touching the boot pin. http://f80.bimmerpost.com/forums/sho....php?t=1264155
	Appreciate 0 Quote

10-27-2017, 09:00 AM	#7
nissubaru Lieutenant 233 Rep 564 Posts Drives: 09 335i MSport + 1990 300ZX TT Join Date: Jan 2017 Location: Philadelphia iTrader: (0)	N54 guy over here seeing this thread for the first time...what? Is your DME no longer in the cowl on the passengers side? But instead it's under the intake manifold? Interesting seeing such a change. Just out of curiosity, what is over there under the passenger side cowl on the N55 if not the DME box?
	Appreciate 0 Quote

11-02-2017, 11:25 PM	#9
Xdrive35i2014 Second Lieutenant 56 Rep 254 Posts Drives: X1 35I Join Date: May 2016 Location: Canada iTrader: (0)	Thanks for the guide! Any updates on the actual bench flashing guide? __________________ Mod List: Twisted Tuning MHD tune, XHP3, ER Charge Pipe, catless DP, ER Competition FMIC, Pure Stage 2 Turbo, PURE High Flow Inlet Pipe, ER Outlet Pipe, GFB DV (Plus), Gruppe M intake, Supersprint full exhaust
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12-09-2017, 03:04 PM	#12
Toome Member 159 Rep 269 Posts Drives: 2012 E92 335i M-Sport Join Date: May 2017 Location: San Diego, CA iTrader: (0) Garage List 2012 BMW E92 335i [0.00]	Sorry for the delay, but I finally updated the OP with the Benchflash Guide. Still a work in progress so don't be afraid to suggest changes. Feel free to PM me if you have any questions. __________________ 12’ E92 335i 6AT - Alpine White M-Sports Package Mods - \| MHD Stage2+ ACN91 OTS Map \| K&N Drop-in \| VRSF Kittenless D0wnpipe \| VRSF CP \| VRSF 7” FMIC \| xHP Stage 3 \| Euro Headlight Switch \| Avant Garde M359 \| Michelin PS4S Last edited by Toome; 12-09-2017 at 03:15 PM..
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03-29-2019, 04:28 PM	#14
Turbod Major 396 Rep 1,210 Posts Drives: 2014 E84 X1 35i M Sport Join Date: Mar 2015 Location: Oregon iTrader: (0)	Has anyone that has done this run into issues after bench flashing the DME? I have 4 codes that I cannot clear and the half engine light. Looking up code descriptions isn't always easy but from what I found most seems to relate to throttle valve. 28B0 28AB 28A4 28A9 __________________ 2011 E92 335i \| 11.7@125 SOLD 2017 Camaro SS \| 12.7@114 SOLD 2019 Audi TT RS \| 10.5@130 SOLD 2020 F97 X3M \| 11.0@123 2023 G80 M3 xDrive
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04-08-2019, 11:11 PM	#16
ferocity02 Colonel 530 Rep 2,083 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	Remember to clear codes on the DME before trying to start it for the first time. I didn't and the car ran like dog shit, couldn't idle, loud as hell (wastegate wide open). The code was 36FD "DME main relay, plausibility: prematurely dropped out". After clearing it ran perfectly fine.
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04-05-2020, 01:26 PM	#18
Snowboardkid503 Private First Class 10 Rep 154 Posts Drives: 15 X5 F15 35i Join Date: Feb 2017 Location: Portland,Or iTrader: (0)	would this happen to work for F15 X5 35i, the unlock exe?
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