how u mean that u dont support obd1 vehicle sir as company i could see that u all commpany will not last long as top company i will like people to check out these product and see if this scan tool [Carmanscan VG ] u will be inpress im one of the person that work on obd1 vehicle alot now ihave buy another scan tool NOW THIS TO U AUTYEL TELL US WHY YOU ALL CANT WRITE AND OBD1 PROGRAM