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MSD81.2 N43 to N54 software swap
26-03-2019, 10:21 AM,
Post: #1
MSD81.2 N43 to N54 software swap
Hello guys,

As the subject states, I have a MSD81.2 ECU from a N43, I want to use this ECU for a 335i N54, can I swap the software without problems? Will it even work?

I could not find the answer on the internet.
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27-03-2019, 12:32 PM,
Post: #2
RE: MSD81.2 N43 to N54 software swap
4cyl ecu to 6cly , no
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30-03-2019, 21:17 PM,
Post: #3
RE: MSD81.2 N43 to N54 software swap
(27-03-2019, 12:32 PM)donesko Wrote:  4cyl ecu to 6cly , no

Hmmh, the 6 cilinder uses the same MSD81 ECU, I am wondering why it should not work? Difference in hardware?
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30-03-2019, 22:11 PM,
Post: #4
RE: MSD81.2 N43 to N54 software swap
The 6 cylinder does not use 'the same' msd81 ecu.

N54 is MSD81.0
N43 is MSD81.2

There are actual hardware differences here.
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31-03-2019, 07:14 AM,
Post: #5
RE: MSD81.2 N43 to N54 software swap
(30-03-2019, 22:11 PM)Enabled Wrote:  The 6 cylinder does not use 'the same' msd81 ecu.

N54 is MSD81.0
N43 is MSD81.2

There are actual hardware differences here.

Hmmh, technically it is the same ECU but different hardware, exactly what I was thinking but I was not so sure about that. In that case, I have my answer. Thanks smile
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