I have a 90 lx sedan and a first gen b16a obd0 pr3 ecu already tuned. Its out of my old Crx race car which has been sitting in the garage for about seven years. So my question is how can i keep my same set up with out going obd1also i have to convert to mpfi some kind of way for the sedan which is dpfi which harness am i going to need to complete my swap?

 

Assuming you have all the sensors and manifold with that motor (along with all the B swap gear you would have used with the CRX), you should just need to follow this guide:

http://hondaswap.com/swap-articles/d...writeup-49557/

 

Thanks then i have every thing i need.