DCshoecompany

Hey everyone sorry for asking but ive search an couldnt find much but i was wondering if the 97 civic ex harness will plug and play with the obd2 b18b motor or will i have to redo the wiring harnesses?

mustang5.slow

you will keep the same harness. and the ObD 1 fuel injectors, alt and starter, the distributor you Will use the OBD 2 and just ree-pin it to the OBD 1 plugs. and that is basically it the rest is just plug and play.

any other Q.'s I'll be glad to help.

hope that this answered your question.

DCshoecompany

thanks for that part of the info so the the 97 civic ex are obd1? what distributor do i need to use civic or the integra? and if the 97 ex was the single cam vtec motor will the harness still have the same fitment as what u describe? thanks if you could help out agian...

mustang5.slow

no they are OBD2 and you can use the OBD 2 distributor with your OBD 1 harness.

and you will have to wire your vtec plugs. and get a p28 ECU.

BTW no prob. keep asking.

DCshoecompany

So what happen if a ls vtec motor was getting drop in would it be the same as the above info???

Syndacate

I don't really like mustang5.slow's information on this one...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DCshoecompany &raquo;</TD></TR><TR><TD CLASS="quote">Hey everyone sorry for asking but ive search an couldnt find much but i was wondering if the 97 civic ex harness will plug and play with the obd2 b18b motor or will i have to redo the wiring harnesses?</TD></TR></TABLE>

You don't have to do any plugs on the harness. The harness is OBD-II, the motor is OBD-II. It's 100% plug and play as far as plugs go, you don't need to use a diferent starter, alternator, nor injectors as mustang5.slow led you to believe.

Also, you can't use a P28 ECU without a conversion harness - and it's completely worthless if you did. Chipping an OBD-I ECU to run an LS basemap is probably the biggest waste on an OBD-II car.

Just plug in the stock LS ECU, it'll work fine unless the motor is 99/00 in which case you'll need a OBD-IIa to OBD-IIb conversion harness.

If you were to go with an LS/VTEC you'd need to tune it, so you'd have to go with a OBD-IIa to OBD-I conversion harness and run either a chipped ECU, or a tunable ECU such as AEM or Hondata.

DCshoecompany

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">I don't really like mustang5.slow's information on this one...

You don't have to do any plugs on the harness. The harness is OBD-II, the motor is OBD-II. It's 100% plug and play as far as plugs go, you don't need to use a diferent starter, alternator, nor injectors as mustang5.slow led you to believe.

Also, you can't use a P28 ECU without a conversion harness - and it's completely worthless if you did. Chipping an OBD-I ECU to run an LS basemap is probably the biggest waste on an OBD-II car.

Just plug in the stock LS ECU, it'll work fine unless the motor is 99/00 in which case you'll need a OBD-IIa to OBD-IIb conversion harness.

If you were to go with an LS/VTEC you'd need to tune it, so you'd have to go with a OBD-IIa to OBD-I conversion harness and run either a chipped ECU, or a tunable ECU such as AEM or Hondata.</TD></TR></TABLE>

thanks for that info it will be very useful to what i have planed for my car..also can i do the OBD-IIa to OBD-11b harness conversion my self or is there web sites that sells them?? thanks agian i have thought about it and am goin to do LS/VTEC

another question would i have to get diff exhaust pipping or will my stock ex pipping bolt up to the ls motor?

philosofy1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DCshoecompany &raquo;</TD></TR><TR><TD CLASS="quote">
thanks for that info it will be very useful to what i have planed for my car..also can i do the OBD-IIa to OBD-11b harness conversion my self or is there web sites that sells them?? thanks agian i have thought about it and am goin to do LS/VTEC</TD></TR></TABLE>

the engine harness would be a plug n play, the difference in the obd2's are the ecu's.

here this might help you for the vtec wiring on the lsvtec question:
http://www.rywire.com/store/

DCshoecompany

QUOTE=philosofy1]

the engine harness would be a plug n play, the difference in the obd2's are the ecu's.

here this might help you for the vtec wiring on the lsvtec question:
http://www.rywire.com/store/[/QUOTE]

thanks for that info

Does anyone know if i have to get a exhaust system or would my stock bolt up the ls stock headers????[