i want a civic

i have a 98 coupe which is obdIIa and i'm gonna swap a 97 ls motor which is obdIIa as well but i couldn't get the 97 ls ecu so my friend sold me a 99 ls ecu which is obdIIb..can i still use this ecu for my swap and runn normally?!?!?!

inspyral

OBD-IIb has a couple more sensors, and the ECU pinouts are different. You'll need some way to convert your ECU plugs to OBD-IIb in order to plug your harness into the OBD-IIb ECU. I thought the 99 LS was still OBD-IIa? See if your harness will plug into it. If it does, then you should be fine. If it doesn't, then the above applies.

i want a civic

thats the wierd part..my harness did plug into the ecu..unless my friend thought it was a 99 and its probably a 96-98 ecu..so if it pluged in then i have nothing to worry about!??!

poison

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by i want a civic &raquo;</TD></TR><TR><TD CLASS="quote">i have a 98 coupe which is obdIIa and i'm gonna swap a 97 ls motor which is obdIIa as well but i couldn't get the 97 ls ecu so my friend sold me a 99 ls ecu which is obdIIb..can i still use this ecu for my swap and runn normally?!?!?!</TD></TR></TABLE>

Yes you can. You will need to get an OBD2a &gt; OBD2b conversion harness, or purchase a 96-98 LS ECU.

The difference between the two is not much, just the connectors mainly.

They both have A, B, C, D connectors. Only on OBD2a, there is A, B, D connector, the C connector doesn't have any pins or anything. Where has OBD2b, has the same connectors, only it's A, B, C and the D connector is not used.

i want a civic

oh ok thanx for the info guys..but i think that the ecu i have may be 96-98 cuz all my connectors pluged in..if they pliged in then that means that the ecu has to be 96-98 rite?!?..

inspyral

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by i want a civic &raquo;</TD></TR><TR><TD CLASS="quote">oh ok thanx for the info guys..but i think that the ecu i have may be 96-98 cuz all my connectors pluged in..if they pliged in then that means that the ecu has to be 96-98 rite?!?..</TD></TR></TABLE>
I believe the OBD-IIa years for Integras are 96-99, and the OBD-IIb years are 00+. If they all plugged in, then you should be good to go.

i want a civic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by inspyral &raquo;</TD></TR><TR><TD CLASS="quote">
I believe the OBD-IIa years for Integras are 96-99, and the OBD-IIb years are 00+. If they all plugged in, then you should be good to go.</TD></TR></TABLE>

nice!!..thats great news!!..thanx for all ur help!!

BMac86

I need a OBDIIa -&gt; OBDIIb conversion harness to run the 99-00 SI p2t ecu in my 97 Civic. Anyone know where I can find info on making my own or buying this harness? Thanks!