The Honda B16A3 engine functions an OBD1 system, which permits improved diagnostic abilities and enhanced engine functionality checking. i cant even post a pic of my si on below you think i can post a pic of my stamp, do some analysis the b16a3 was in a few si's. i https://b16-motor-for-sale03847.shotblogs.com/new-step-by-step-map-for-b16-engine-and-transmission-for-sale-40777246