Hi all, I have a 96 Civic EX with a swapped D16y7 engine done by the prev owner. The car does not rev past 6000k rpm. I looked at the ECU and it is a P2P, which I am assuming the owner left in after he did the swap. I am currently looking to buy a P2E ECU, but need guidance on how to find out whether the current engine requires an OBD2a(96-98) or OBD2b(99-00) ECU.

Thanks.

 

Help, just need to know how I can find out whether my engine is obd2a or obd2b. Is there a code etched somewhere on the engine?

 

You have likely not received any responses because there are no easy answers based on the information that you have offered.

Please post a photo of the ECU plugs while they are plugged into the ECU and a photo of the intake manifold that is installed in the car. From there, we can offer up some help.

 

Thanks for the response, I will get some photos of the ECU tomorrow. As for the intake manifold, prev owner swapped the y8 manifold for the y7, so the engine is a y7 with a y8 intake manifold.

 

should be a. p2e will want a 3 wire iacv.

 

The oem ecu is an obd2a.

 

I can confirm P2E ECU is OBD2a.. Just done a Frankenstein Mini-Me (D16Y7 block w/D16Z6 head) swap and used a stock P2P ECU (for VTEC) to replace my P2E.. The oddity of this year's ECU's is that it uses all A, B, C, & D connector plugins

 

AUTOMATIC 6G Civics use all four ECU plugs... it has nothing to do with whether it is an OBD-2A ('96-98) or OBD-2B ('99-00) chassis.

 

That's cool to know that it's a 6G thing, Ty-. I went by the actual connector design to label it as OBD2a, since they had 3 rows of connector pins, identical to the several OBD2a ECU images you guys were so excellent to upload . This has been a cool learning experience

 

Just throwing this into the mix. Unlike 96-98 Civics, both manual and auto 99-00 Civics use all 4 ECU connectors.

 

My only question is.. Does connector B change the VTEC & KS wire install locations? I basically didn't touch connector B for anything.. Stuck with the posted A, C, D

 

96-98 Civic ECU Connector B only carries auto transmission wires.

 

That's awesome, thanks again