Jason
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Breaks everything!
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« Reply #15 on: December 18, 2010, 09:17:10 PM »
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Yeah, the S4 wiki is a good resource.
Back in the day, the reason for M box being choice was because the Hitachi MAF is more reliable than the failure prone Bosch MAF. Before I went M, I changed the Bosch MAF 3 times, or about once every 30,000 miles - no joke.
It is also rumored that the M-box code was faster and performed better, but since I switched from A to M when I went stage 3, I really have no data to support it either way.
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s5fourdoor
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« Reply #16 on: December 19, 2010, 01:47:05 PM »
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Cool... I'm pretty certain I'll do the swap, if not tuning myself, then definitely pre-K04 install.
I remember reading something about also needing to turn off ESP in VAG-COM. A-box cars, correct me if I'm wrong, were the only ones without ESP... Does anyone know details about this? I'll search QW and see if I can find any information so we can keep this all in one location.
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s5fourdoor
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« Reply #17 on: December 19, 2010, 01:58:10 PM »
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http://s4wiki.com/wiki/Engine_recodeDeals with ESP / ABS when swapping ECU's. Its not 100% clear to me, but with certain cars, disabling ESP means ABS is off as well. Does anyone know, if I do the M-box swap, when I go to recode this, will I lose my ABS?
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Jason
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« Reply #18 on: December 19, 2010, 07:56:33 PM »
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I never changed my coding IIRC, and my ABS still works. I will double-check later tonight so you have a definitive answer. I know for a fact ESP doesn't work... lol...
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Jason
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« Reply #19 on: December 19, 2010, 08:29:30 PM »
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Ok, I am still running 06611...
My car is one of the first US models built, so I was obviously A box with no ESP, and then converted to M.
I know my ABS works, so if you are A, you can keep the A coding but run M code.
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s5fourdoor
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« Reply #20 on: December 19, 2010, 10:40:25 PM »
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Hi Jason - Thanks for the info. The problem manifests in cars which are M-box but have A-box retrofits. That's at least what my searching discovered on QW.
This actually brings up another question. Where is this "coding" stored? Is it a part of the 1MB bin-rom? Or is it stored elsewhere?
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Tony@NefMoto
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2001.5 Audi S4 Stage 3
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« Reply #21 on: December 19, 2010, 11:10:51 PM »
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Coding is stored in the serial eeprom. This is also where the error codes, adaptation channels, and immobilizer info is stored.
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Jason
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Breaks everything!
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« Reply #22 on: December 20, 2010, 12:03:41 AM »
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For the ABS module, I wonder if it's as easy as swapping in an early model ABS controller? The ETKA lists the following part numbers for my non-ESP car:
8E0 614 111 E (note this is compatible with 8E0 614 111 A)
With ESP:
8E0 614 111 AT (also listed: T, AS and AA)
With ESP you also get the following components:
8D0 907 389 A (also listed: E and one with no trailing letter) - control unit
4D0 907 651 - acceleration sensor
4D0 907 657 - yaw sensor
4B0 907 637 A - combi sensor for acceleration and RPM
8D0 927 133 B - dash switch
8D1 971 279 S - ABS harness
While the ABS harnesses are different for non-ESP (8D1 971 279 AB) and ESP (8d1 971 279 S), they both have a 31 pin connector (8D0 971 977), which makes me think you can put a non-ESP module on the ABS pump, and perhaps just disconnect the control unit and get your ABS back.
Now, as far as KEEPING ESP, that's a whole 'nother can of worms... Perhaps you need to code the A-box as M-box?
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judeisnotobscure
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« Reply #23 on: January 29, 2011, 11:04:31 AM »
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What would you do to code an a as an m? I'm not clear on how or what I would modify in the eeprom to change this. I guess I will hold out and buy an m or h coded ecu since I would like to keep my esp.
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I have a b5 s4
but i just want to dance.
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Tony@NefMoto
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2001.5 Audi S4 Stage 3
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« Reply #24 on: January 29, 2011, 01:18:29 PM »
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What would you do to code an a as an m?
To do this you just need to connect with VAG-COM and change the coding of the ECU. |
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judeisnotobscure
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« Reply #25 on: January 29, 2011, 02:57:58 PM »
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thanks, i will give it a whirl.
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I have a b5 s4
but i just want to dance.
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slowrideBC
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« Reply #26 on: September 06, 2012, 12:33:07 AM »
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Hey there, I have a 2000 s4 with no traction control
I purchased a 605 setup with a tuned t box ecu. I am trying to recode the t box ecu to disable ESP, and I cannot get VAG COM to do this. When I go to ENGINE > LOGIN> and enter the codes as stated in wiki, nothing happens. The vag com just sits there and does nothing. Any ideas?
am I supposed to go to ENGINE> CODING?
am I changing 11463 or 13737 to 06611 for no ESP
or am I loging into 11463 or 13737 and then changing the value to 06611 for no ESP?
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« Last Edit: September 06, 2012, 01:10:42 AM by slowrideBC »
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darkshado87
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« Reply #27 on: November 02, 2013, 03:34:56 AM »
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Make sure you re-code your instrument cluster if you switch from A to M, otherwise it won't start.
Started just fine for me no issues |
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