I don't know if this is a dumb question, but i figured i would ask any ways. I'm going to be converting my crx to 0bd1 for my b18c1. My question is how do you check codes after i convert it. I know i just look at my hf ecu right now. I'm going to be using my p28 i got chipped by ih8ricerz. So what will i have to do to check codes?

DEF

 

bump

 

You wire up a switch to the computer, the to ground, and in one position the switch just showes the check eng on the dash, and in the other position, it flashes the code. Ryan

 

can you rewrite that i didnt understand it correct? Please more info.

DEF

 

It tells you how to do it if you buy a 0bd0-1 harness. You have to wire up a shitch. One side of the switch goes to the ecu, the other goes to ground. The swhich off, just showes that you have a code, and the switch on says what code it is. It will blink the code straight off the check eng light on the dash. There is no led on obd1. Ryan

 

thank you so much. I'm going to see if 90blownhatch has that wire.

DEF

 

Most OBD0-OBD1 conversion harnesses let you jump the ignition timing plug underhood to check codes, which your 89 HF will have. Some 90-91 Civic/Integra don't seem to, or at least I can't find one, so I solder a plug into my OBD0-OBD1 harnesses that can be jumpered to retrieve codes.