helping my brother out with his honda build. not to familar with honda's. been working on suzuki's, nissan's and jaguars for most of my automotive career.

heres the story on the car.
1990 crx si, he blew the engine while racing me. car developed a rod knock. we swapped out the engine with a 95 civic si engine. car runs fine everything is great. just no vtec. i was told to get a OBD 0 ecu for a crx si with vtec.

question is where do i find one ? havent really looked to be honest with u. friend told me this is a great site for honda lovers. im sure i would have to run knock sensor, oil pressure switch and vtec wires once i get the ecu. im not sure if they even came with knock sensors back then.

Please give me ur feedback on this and if u can give me some help that would be great.

thanks, lex

 

use the z6 distributor and an obd1 ecu...i have this setup in mine works good

 

no change in engine harness. can still use the crx si harness ? what kind of computer u running?

 

p28 ecu and youll need the wiring for the obd1 dizzy... vtec solenoid...and a 4 wire o2 ...jumper harness for the ecu ...im probably forgetting something

 

I guess you could run the B16 PR3. There is an OBD0 version for that.
There is no OBD0 D16Z6 though so you would have to do a 1-wire vtec conversion to the ECU and chip it to make that work. Then your fuel and ignition maps would be off so it wouldn't work proper unless you had it tuned.

Best route is to use the ECU for that engine - a P28. you will need to convert to OBD1 with a jumper harness, distributor, and 4 wire O2 sensor. Everything else is good to go.

I'm curious, when you did the engine swap, what distributor did you put on there? Assuming you have the stock computer as well from the stock CRX motor.

 

ha...i didnt forget anything....woohoo ...who says weed effects the memory

 

i used the stock dizzy. i modded it to work. car runs perfectly fine and yeah its stock crx ecu.

thanks for ur help fellas. i think its easier to run a jumper harness from obd 0 to obd 1 and get it tuned. what sucks is my brother is a college study with limited funds. any advise of where to find the jumper harness and p28?

 

If you go with the OBD1 conversion, then you can use the stock D16Z6 ECU and you won't need to tune it.

 

i did the swap in my civic i used the z6 dizzy and p28 ecu cept i didnt use a jumper i wired in the obd1 ecu plugs and modified my engine wire harness

but i would deffinately use the z6 dizzy and p28 ecu along with a obdo to obd1 ecu conversion harness

 

Yeah there is this website www.eBay.com and they have sellers on there with them listed all the time. Maybe even you could find one at the junk yard...

 

i used a zerg industries jumper harness. i bought it on ebay with the obd0- obd1 jumper and dizzy jumper. i wired the vtec and 02 wire myself. came with vague instructions lol .

 

jumper harness and si ecu sounds like the easiest and fastest thing to do. thanks fellas.