Changing '95 993 Motor to OBD2 brain? Doable? Options

[SirAndy]

My '95 993 Motor is a pre-varioram OBD1 Motor and i have been toying with the idea of updating it to OBD2.

There was, for a short time, a OBD2 brain available for the (still aircooled) 993 starting in '96 with the varioram version of the motor.

It is my understanding that besides the tubes inside the intake, the two motors are pretty much identical.

I wonder if i could get a later brain and harness and make it work with my engine.
Is there anyone out there who has tried this?
(IMG:style_emoticons/default/idea.gif) Andy

[ClayPerrine]

Andy....

You do realize that a varioram intake won't fit under a 914 engine lid. (IMG:style_emoticons/default/biggrin.gif)


That being said, the dashboard interlock is incorporated into the ECU, as is the Tiptronic transmission controls, if so equipped. The dashboard interlock can be bypassed, but it is an expensive chip you have to buy.

It can be done, but it will take some downtime for your car. If I were doing it, I would get the whole varioram induction system for the ODB 2 car with the harness, not just the ECU. Then spend some time with the wiring diagrams and documentation and determine what you can and can't disconnect.


The data logging and tracking of the car sounds really cool! I would love to have something like that in my car. Unfortunately MFI doesn't lend itself to data logging....... LOL.