Hey guys my car which is a 91 crx si with a d16y8 motor is running a p28 ecu, obd1 dist, and the obd2 injectors. To make the p28 work My buddie made a jumper harness in the area of the ecu. It is still utilising the resistor box for the obd-0 injectors and running it on the obd2 injectors. Should I switch to obd0 injectors so I dont burn them out, or do I use obd-1 injectors and rewire it??? This resistor box just became news to me as of a month ago. My car right now is running 15.3's in the quater with only an intake, but idles like crap. Any help would be great!! thanks-jay

 

Well let me say that you're running pretty good in the quarter for what you have done. Do you have exhaust? I was running 15.3's and one 15.2 with really bad wheelhop, intake and exhaust. These little Sohc VTECS pull pretty hard, huh?

Anyways, as for your questions, let ME ask YOU: Why are you using an OBD-I distributor? I hope you didn't pay extra for that, because you are supposed to use the OBD-II Y8 distributor for the swap. Use the OBD-II Y8 Injectors as well, and remove the injector resistor. Keep in mind that you'll have to change the harness clips as well. I know that you can run stock injectors, but no one has a definitive answer for how long they last... I ran the Y8 injectors. So, in summary: Y8 injectors, distributor, remove the injector resistor. As for your idle, check your 02 sensor. Mine started to idle like crap too, and it eventually threw a code 1, for oxygen content. Before I wrecked it.


[Modified by 89_Y_49RIP, 7:23 AM 9/15/2002]

 

Thanks for the reply. To be completely honest with you I didnt do the swap myself so I used all of the parts listed because that is what the shop, that did the swap recommended. I am now trying to get into working on my car myself and finding all of these weird things . Ok so I should remove the restior box and then do what. I assume that I have to wire something? Also what is the benifit of running the obd2 dist with the obd1 ecu... Or does the ECU have no affect on what obd dist and injectors to run? Sorry for my cluster f@#k of confusion, but I am trying to learn, and am seeking the wise ones . Yeah these little sohc vtec's go better than I thought. I ran a 15.37, now I have a high flow cat and custom 2.25" exhaust and still waiting to run it. Thanks again for the help-Jay

 

When you take out the injector resistor box, you simply solder the wires together, or something to that effect. Storminmatt made a post on the whole OBD-I conversion on one of the crx boards (I forget which one), but here are his instructions on removing the injctro resistor:

3. Change injector plugs and eliminate the resistor (see pic of resistor below). This is fairly straight forward if you have an HF/SI. Simply connect like colors on the ECU side of the plug. On the hot side, it may actually be easier if you use the complete 1992-2000 wire all the way back to the 8-wire connector. Then you can connect the 8-wire connector where the injector resistor was. This saves time and soldering. Of course, if you have a DPFI model, you will need to add the 8-wire connector to the wire going to the hot side of the injectors and add two wires from the extra injectors to the ECU plugs in the passenger cabin.


The ECU doesn't really care if you run OBD-I or II dizzy, and possibly injectors, because the wiring is all the same. Did you have any trouble setting the timing with the D16Z6 distributor? I'm pretty sure they mount differently. Anyways, hope this helps.

 

Tell me it isnt so 89y49rip

Well how was it running before that fateful day? What is the next project in store for ya?