By the looks of it, 1996 - 1998 2JZ-GTE supras are OBD-II compliant. Can anyone who has an MKIV verify this information? (Well, if it is OBD-II compliant, the car should have an OBD-II connector, in addition to the standard Toyota diagnostic port).
Dont think they are OBD2, i know new toyotas in California that have OBD2 have individual cylider EGT'S to adjust a/f mixtures for decreased emissions.