Interchangeability of DME brains: '86 to '88

[sprintamx]

Will an '86 911 DME brain work in an '88 911? Both cars are non turbo. I do know that the '86 did not need the jumper connection modification to work with a custom chip.

Thanks,
Aaron

[DonMo]

Both are likely 28 pin DME's and should be interchangable.

[ChrisBennet]

Yes they are interchangable. The idle speed is slightly different so you might want to readjust the idle speed to match the "new" DME.
-Chris

[911st]

Can you plug in a complete later box with a 28 pin chip in it, into an 85 (24 pin) wire harness and have it work or dose the wire harness also have to be changed. Or, what else to update.

[PcarPhil]

It's my understanding that all '84 - '89 DME's are interchangable. There are slight differences between them but an '84 DME will work with an '89 engine, and vice verse.

[sprintamx]

Thanks guys.

Aaron