If someone has a copy of an older GCR, perferablly 1995 & 2000, I'd be interested in hearing the wording of the ECU rules at that time. I'm working on a proposal for a changes to the current rules that doesn't penalize non-flash OBD2 cars of which a lot are being coming eligible for IT now.

This is the section that I'm looking for: 17.1.4.D.6

Summary of current rules:
-unmodified OEM ECU connection to the wiring harness (so an OBD2 to OBD1 harness adapter is illegal)
-all modification must fit the stock ECU box (no piggyback systems)

Also in the 2003 GCR this section is highlighted as being reworded for 2003, what was changed just for 2003?

Jeremy