If it is an OBD1 PR3 then it is basically the same as a P28 or OBD1 P30. Cut J1 and you are back on the stock maps.
However, if it an OBD0 PR3 the old ROM was removed, a socket was soldered in, and a new chip was installed.
If this is the case you will need to get a new chip with the stock...
If you mixed the two white wires up the car should not run.
The one white wire will be paired up with an orange wire if you peel back the loom you will see what I mean. This is one of the distributor sensors...can't remember which one off the top of my head.
The other white wire should have a...
I have chipped P28s in stock and ready to ship for $180 shipped.
I guarantee all of my work and offer full technical support.
Please email me at kenji211@tampabay.rr.com
-kenji
Thanks for the kind words Jason.
I still chip ECUs and sell chipped ECUs. I also provide other ECU modification services as well.
If you have any questions please email me at kenji211@tampabay.rr.com
-kenji
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