Why didnt u just convert to OBD1? This is why its best to convert... Just to avoid a wiring and troubleshooting nightmare... Now you have an OBD1 engine, in an OBD0 car, you have wiring for MPFI and on top of that you have a VTEC controller... Sounds like you have one big mess on your hands...
I dont know for sure, but I seem to remember something about the TPS wires on a DX with the MPFI swap have to be flip flopped or something... Sounds like it might just be your problem... Ill look it up and edit or post back if I find anything on it...
K here this may help...
http://www.honda-tech.com/zerothread?id=500406
I dont know about the crank angle sensor code... But I believe its in the distributor... So check the wiring there...