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terminator
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« Reply #105 on: October 23, 2013, 11:59:01 AM »
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Desoldering is not problem for me, but F-box is not my TCU, but Allroad owner. If smth will work incorrectly I will swap the files. if its not secret, why do you collect TCU files?  |
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ddillenger
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« Reply #106 on: October 23, 2013, 12:28:18 PM »
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Because noone has them.
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terok
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« Reply #107 on: October 24, 2013, 01:45:05 AM »
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Here's few |
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terminator
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« Reply #108 on: December 18, 2013, 12:28:47 PM »
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Because noone has them.
Hope you still need it 4Z7 927 156F from Audi Allroad 2.7t 551M |
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ddillenger
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« Reply #109 on: February 22, 2014, 08:23:35 PM »
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So not all TCU's are compatible-lol
I have experienced the following:
2000 A6 4.2-in a league of it's own so far
4B0927156CT-cannot be used in a 2.7t, hardware is not compatible
3B0927156AC-cannot be used in an S4, it will have a voltage error after it shuts down/powers back up (but otheriwse works)
2001+ 2.7t tcu's appear to all be interchangable, at least on a hardware level. I have used a 2001 4Z7927156A box in a 2004 4B0927156FE car (once programmed) without any issues.
If you have to crossflash, get the closest match to your car you can. Open it up, and you will quickly see the differences.
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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MyTunes
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« Reply #110 on: February 22, 2014, 08:29:04 PM »
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Well done sir....  Next question what about Euro flash on NA box and vica versa? So not all TCU's are compatible-lol
I have experienced the following:
2000 A6 4.2-in a league of it's own so far
4B0927156CT-cannot be used in a 2.7t, hardware is not compatible
3B0927156AC-cannot be used in an S4, it will have a voltage error after it shuts down/powers back up (but otheriwse works)
2001+ 2.7t tcu's appear to all be interchangable, at least on a hardware level. I have used a 2001 4Z7927156A box in a 2004 4B0927156FE car (once programmed) without any issues.
If you have to crossflash, get the closest match to your car you can. Open it up, and you will quickly see the differences.
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ddillenger
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« Reply #111 on: February 22, 2014, 09:09:36 PM »
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I am pretty sure that would be fine, but I don't have any euro tcu's.
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MyTunes
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« Reply #112 on: February 22, 2014, 09:56:33 PM »
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Well my euro one should be there Monday or Tuesday. Feel free to give her a test run |
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ddillenger
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« Reply #113 on: April 03, 2014, 09:18:53 PM »
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Update:  I've been able to read information from the TCU, but so far have been unable to get it into debug mode to get any sort of full file. Thinking it's some sort of watchdog that prevents the mcu from shutting down (it powers down, then immediately restarts when issued the reset command-the thinking here is that it's part of the design). Have a TCU on the way to the creator of the BDM I've purchased, he's going to see what he can find. We're both very optimistic on creating a working BDM flashing protocol. I know, it's not OBD, but it beats desoldering, and the MED9 BDM adapter that many already have works well. The BDM adapter is around 70 bucks with shipping. Will update this thread when I have more info. |
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« Last Edit: April 03, 2014, 09:21:49 PM by ddillenger »
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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MyTunes
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« Reply #114 on: April 03, 2014, 09:28:10 PM »
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Well done sir. Can't wait for more info, but this is a huge step forward IMHO Update: I've been able to read information from the TCU, but so far have been unable to get it into debug mode to get any sort of full file. Thinking it's some sort of watchdog that prevents the mcu from shutting down (it powers down, then immediately restarts when issued the reset command-the thinking here is that it's part of the design). Have a TCU on the way to the creator of the BDM I've purchased, he's going to see what he can find. We're both very optimistic on creating a working BDM flashing protocol. I know, it's not OBD, but it beats desoldering, and the MED9 BDM adapter that many already have works well. The BDM adapter is around 70 bucks with shipping. Will update this thread when I have more info. |
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terminator
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« Reply #115 on: May 21, 2014, 10:09:50 AM »
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From Allroad 2003 2.7t
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ddillenger
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« Reply #116 on: May 21, 2014, 10:10:14 PM »
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We can now read/write via BDM. It requires jumping two pins to shutdown the hardware watchdog, and disabling the software watchdog, but even so, the days of desoldering are over  Tested today on 4 different TCU's ranging from 1998-2004 without incident. A read takes approximately 10 seconds, a write 30.  Still working on reading/writing to the eeprom, but it won't be long. I plan to create a writeup to do this. It'll cost you about 75 bucks with shipping for the BDM, then another 40 for the frame I'm using (with the adapter). If there are enough people that are seriously interested in making this happen, I will gladly take the time to walk you through the process of reading/writing. |
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« Last Edit: May 22, 2014, 12:50:22 AM by ddillenger »
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terminator
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« Reply #117 on: May 22, 2014, 11:25:10 AM »
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This is great, but I have no info how to tune it... I know that transmission works incorrectly after 350-400hp.
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ddillenger
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« Reply #118 on: May 22, 2014, 11:50:21 AM »
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This is great, but I have no info how to tune it... I know that transmission works incorrectly after 350-400hp.
I'm still working on that myself. I've come a long way, but still have a distance to go. My hope here is that others will start reading their tcus and looking for maps. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
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terminator
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« Reply #119 on: May 22, 2014, 12:14:08 PM »
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I think the main problem with load. After 350-400 hp TCU change 5 gear to 4 gear then 4 to 5 etc. And maybe I did smth wrong but I could not raise RPM, cause TCU change gear after 6800.
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