[s-cars] ECU question

[Scott Thompson]

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[ Picked text/plain from multipart/alternative ]

I swapped a 93 IA 2.5 bar chipped ECU into my 95 S6 for testing, and it ran=
 fine.  Also swapped the S6 ECU into the 93 S4.  It also ran, but the total=
 test time was like 10 mins/car.  I think there were code changes in the bo=
ost mappings through the years, but don't know about the rest of the ECU.
-Scott
 jimk at spotgraphicsinc.com wrote:Is a stock ECU from a 1993 S4 interchangabl=
e with a stock one from a
1995 S6? How about modified? I thought they were and can't see why
not, but haven't tried it yet.
The reason I ask is that there are 2 different part numbers and the
dealer is quoting different prices with the S6 one being cheaper. I am
very confused.
93 S4 ECU 8A0 906 266 B
95 S6 ECU 4A0 997-551-X
Jim

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