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refrase that Ok let me refrase that, whats is the difference between the p28(obd1) and the p72(obd1) ecu's. Besides the fact that one came from a d16z6 motor and one came from a b18 vtec motor. Does anybody know any hard facts?

Whats the differance between the two ecu's. Are the pinouts the same?

hmm, well im running a obd1 gsr head, and a p28 ecu. you know that sensor right in the back by the alternator that has two plugs that are right next to each other and they have no markings on them. Does it matter which one is which?

oh thats nice, 30 people look, but have no input. Well thanks

And dont forget to use the a6 ecu if your going to convert. If your going to go the vtec route get the p28.

Ok there is tons and tons of info and pics and charts on what you need, and how to drop the gsr/ b16/ b18 into the crx/ ef. But what I dont under stand is there is little wiring help with this. I found pics on the the ecu im using. Not exactly sure if the 88 and 89 have the same wire codes...

it all depends on what zc you have. There's so many zc's ou there.