I know this is a newbie qustion but how exactly do u convert from obd0 to obd1.....what do u need.... and how much would it cost.
You need....
1)OBD1 ECU ~$125-150 for a chipped/socketed p28
2)OBD1 Distributor. Depends on which engine, look to spend ~ 125-150 or so on an obd1 vtec distributor.
3)OBD1 Alternator. I've heard that you don't actually need it, but I'm not sure, that's just what I've heard. Don't know how much they cost. Call autozone, kragen, or your local honda dealer. Or buy aftermarket.
4)Conversion harnesses for a)ecu, b) distributor, c)alternator. You can just rewire your harness at the distributor and alternator, but xenocron sells the plug-and-play harnesses for like $15 a piece or something, so you don't have to hack your harness up. An ecu harness will cost you around $70 for a good quality piece. Again Xenocron (Chris Harris) makes great quality stuff for a good price. His socketed ecus are well soldered as well.
A lot of people on here will tell you that you need to switch to obd injectors, but that is not true at all. In fact, many people switch over to an obd0 style setup so they can run a higher flow peak and hold type injector, rather than paying a LOT of money for higher flow saturated injectors.