Although the 60-pin plug in your harness will plug right into the new computer, a few wires have to be swapped at the plug.
The newer computer requires an ACT sensor which you should install in the intake manifold.
What fuel injectors do you have? The 88 computer is configured to run 35lb/hr injectors and your 85, depending on the build date, might have green-top (30lb/hr) or brown-top (35lb/hr).
The 88s have a BOO sensor (at the brake pedal) that you will want to install or else the computer will give a trouble code.
Lastly, you will need to install a premium/regular fuel switch, or else ground the pin so it's always in premium or regular.
I don't have the pin numbers handy, but they are around ... maybe in the FAQ?
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86 TC, 73 Mini, 72 Mini Van project
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