Hey guys, I'm fairly new to the Honda scene. I bought a 99 ex a few months ago and have been working out all the bugs. It has a jdm b16a out of a sir2. Currently running a p2t ecu. My problem is I'm.not sure if its obd2a or b. I plan on running a chipped p28. So what harness do I need? Thanks.

 

65 views and no reply... Come on guys. I basically need to know if a p2t ecu is obd2a or obd2b?

 

1999+ P2T would be an OBD2b. So you would require an OBD2b chassis to OBD1 ECU conversion harness.

OBD0=88-91
OBD1=91-95
OBD2a=96-97
OBD2b=98+

At least this is how it works for most USDM chassis anyway. OBD0 and OBD1 overlap in a few chassis, I know that the Accord and prelude went OBD1 in 91 where the Civic was 1 year later. Not that any of this matters in your case.

 

Obd2B to OBD1 harness

 

Thanks guys... That's what I thought. Just wanted to be 100.