S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

I supposedly bought a used M box, but last letter is T. Waiting to hear from seller...

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Old Apr 11, 2007 | 12:32 PM
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Default I supposedly bought a used M box, but last letter is T. Waiting to hear from seller...

I thought the instrument cluster needed to be recoded for compatibility. Can the ecu itself be recoded to work?
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Old Apr 11, 2007 | 12:41 PM
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M and T use the same Channel 60 value in the cluster. Essentially, M=T.
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Old Apr 11, 2007 | 12:43 PM
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My brain feels MT. I wasn't expecting that...
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Old Apr 11, 2007 | 12:47 PM
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Default If you have the same MAF and transmission, you can easily use a different letter ECU

And even if the sticker says one letter, the software may be a different letter.
I run a box with an H sticker, but M software. My instrument cluster is a 2001 RS4 and everything works fine.
I know someone running a box with an A sticker, but has M code and once we worked out the correct soft coding, everything was fine.
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Old Apr 11, 2007 | 12:52 PM
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Cool. I know folks use different boxes. I just wanted to make sure mine was plug 'n play.
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Old Apr 11, 2007 | 02:11 PM
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Default sent you an email, but youre fine

original tbox ecu, every tbox gets recoded to m when chipped by toonahs.
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Old Apr 11, 2007 | 02:25 PM
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groovy
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Old Apr 11, 2007 | 05:46 PM
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Ironically, every M box gets reflashed to T when touched by a dealership.
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