Wats up guys, I recently converted my 2000 civic coupe ex to manual and ive been looking for a manual p2p to get everything running correctly but my automatic ecu has 4 plugs instead of 3 and the car wont start with the manual ecu. Would i need a wire harness or something? Any info would be greatly appreciated.

 

Is the manual ECU OBD2a or OBD2b?

 

Automatic ECUs have an extra plug, when using the manual plug just let it hang. I remember Katman saying years ago that automatic EX harnesses had unique issues that result in a no start condition when used in a 5 speed car, but I don't specifically know what has to be modified.

 

Im not sure if the manual ecu was A or B because i was testing to buy it. Which should it be? Also should it work with no problems?

 

Your 00 Civic is OBD2b. I asked because the OBD2a and 2b ECU connectors look similar; however, I don't know whether they can plug into the other ECU. The OBD2a and 2b plugs are pinned differently.

 

I can attest to RonJ@HT's statement. I just got a 1998 DX and I swapped a d15 into it. I ended up buying a P2P ECU just today, and through research I found that the plugs for OB2a and OBD2b are wired differently. Be careful on which one you get.