New 2009 2010 BMW Z4 - ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   New 2009 2010 BMW Z4 - ZPOST > BMW Z4 Forum (E89) > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications

Post Reply
 
Thread Tools Search this Thread
      11-20-2019, 07:07 AM   #1
thomasj
Registered
0
Rep
3
Posts

Drives: BMW Z4 2012
Join Date: Nov 2019
Location: Perth, Australia

iTrader: (0)

Unhappy ECU remap drama

Hi all,
Had a bit of a disappointing day. Was going to get a stage 1 tune/ECU remap done for my 2012 E89 sdrive20i by a mobile mechanic and it all didn't go too well. I bought the car last Christmas and was hoping for a performance boost.

Here's my day then:
He read the ECU data, went away to combine it with his tune file.
When we came back, he said he will just write the ECU file back and should take 30mins tops. 1.5hrs later I went out to check and he said he was unable to write the modded file back. He said the file he had read was corrupted (?).
He wasn't more specific. Car didn't start anymore.
Then from his support he then received a "stock" E89 Z4 file and he was able to restore it to the ECU. He said he was using Alientech.
The car then started again. He then tried the tuned file again, it failed. So back to his stock file.
We went for a 20min test drive and everything seemed ok again. Then his support got back to him saying that they suspect the ECU might have been tuned by MHD before.

The whole thing took him pretty much from 10am to 4:30pm. And the longer it took, the more I got concerned about my car.

I'm still keen on a tune, so a few questions:
- First and foremost, what do you think the risk of using his stock ECU file is? He said it was from another E89 sdrive20i. So in theory all should be good?

- How can the ECU file read be corrupted? I didn't notice a performance difference after the restore of the stock ECU file, so doubt it has been tuned before (but not 100%).

- Any thoughts if it makes sense to approach another tuner?

Would be great to hear thoughts.

Cheers,
Thomas

Last edited by thomasj; 11-20-2019 at 07:50 AM..
Appreciate 0
      11-23-2019, 08:02 PM   #2
rjahl
Lieutenant Colonel
rjahl's Avatar
610
Rep
1,695
Posts

Drives: Z4 35is
Join Date: Jun 2011
Location: Tampa

iTrader: (0)

Garage List
2012 Z4 35is  [0.00]
Quote:
Originally Posted by thomasj View Post
Hi all,
Had a bit of a disappointing day. Was going to get a stage 1 tune/ECU remap done for my 2012 E89 sdrive20i by a mobile mechanic and it all didn't go too well. I bought the car last Christmas and was hoping for a performance boost.

Here's my day then:
He read the ECU data, went away to combine it with his tune file.
When we came back, he said he will just write the ECU file back and should take 30mins tops. 1.5hrs later I went out to check and he said he was unable to write the modded file back. He said the file he had read was corrupted (?).
He wasn't more specific. Car didn't start anymore.
Then from his support he then received a "stock" E89 Z4 file and he was able to restore it to the ECU. He said he was using Alientech.
The car then started again. He then tried the tuned file again, it failed. So back to his stock file.
We went for a 20min test drive and everything seemed ok again. Then his support got back to him saying that they suspect the ECU might have been tuned by MHD before.

The whole thing took him pretty much from 10am to 4:30pm. And the longer it took, the more I got concerned about my car.

I'm still keen on a tune, so a few questions:
- First and foremost, what do you think the risk of using his stock ECU file is? He said it was from another E89 sdrive20i. So in theory all should be good?

- How can the ECU file read be corrupted? I didn't notice a performance difference after the restore of the stock ECU file, so doubt it has been tuned before (but not 100%).

- Any thoughts if it makes sense to approach another tuner?

Would be great to hear thoughts.

Cheers,
Thomas
Find another tuner. This one is clearly lost.
Appreciate 0
      11-25-2019, 03:09 PM   #3
NoQuarter
Captain
United_States
161
Rep
902
Posts

Drives: 2008 535xi / 2011 Z4 35Is
Join Date: Jan 2011
Location: Indiana

iTrader: (0)

Garage List
2018 BMW X2  [0.00]
2008 535xi  [0.00]
2011 Z4 35is  [0.00]
Does MHD have a tune for this engine?

I'm gonna start with the assumption they didn't even know what engine they were working on.
Appreciate 0
      11-28-2019, 08:26 AM   #4
stormlv
Human
Switzerland
466
Rep
1,051
Posts

Drives: Yes
Join Date: Nov 2013
Location: Geneva

iTrader: (0)

MHD only has a tune for the 35i/is...

https://mhdtuning.com/mhd-flasher-n54/

That tuner doesn't know what he's talking about...
__________________
2018 BMW M4 DCT / ZCP| 450HP / 550Nm | Sakhir Orange | Photo album
2010 BMW Z4 sDrive35i DKG | 306 HP / 400Nm | Spacegray
Sold 2014 BMW 435xd | 360HP / 710Nm | Estoril Blue | Photo album
Sold 2011 Volvo S60 T6 AWD | 304 HP / 440Nm | Ember Black | Photo album
Appreciate 0
      11-30-2019, 10:07 PM   #5
thomasj
Registered
0
Rep
3
Posts

Drives: BMW Z4 2012
Join Date: Nov 2019
Location: Perth, Australia

iTrader: (0)

Thanks guys. Yep, looking for another tuner now.

Got one using Viezu, one using mcchip-dkr. Any preferences on these?
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:32 PM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST