engine swap - wiring

[inovermyhead]

so my nephew bit off more than he can chew i think.

he has a 94 civic dx ej1

and he got a d15b engine (which he says he thinks was from a 99, but then i heard they stopped using it in 95...)

anyway the new engine is VTEC. The wires were cut, which means no harness.

So we need to buy a harness. Or do we need to customize something?

He has the harness original to his car, but of course it doesn't work as is with a vtec.

Can anyone help guide us in the right direction?

 

[99sidude]

You can use the harness from the stock motor!!! All you need is the ecu for the d15b and run the 3 wires for vtec from the vtec solenoid to the correct pins on the ecu. That info can be found here Technical Articles and Reference - HondaSwap Forums

 

[jdmpapa86]

u cant use the harness from the 99 cause its obd2 u need an obd1 harness

 

[jdmpapa86]

unless u get an ob1 to ob2 contector

 

[inovermyhead]

ECU question

Follow up:

He is under the impression that he doesn't HAVE TO get a vtec ecu, but he won't benefit from the vtec without it. Is that true? If so, can he use just the stock harness to the non-vtec ecu for now and upgrade later?

Also, he, who likes to get in even deeper, wants to know if he can use a performance ecu(AEM)?

I think he should just get the D15B ECU & get the VTEC harness since it is only $100 and he probably doesn't know how to wire from the solenoid to the ECU.

Thanks.

 

[suspendedHatch]

Yes you can use a non VTEC ECU and not have VTEC.

I wouldn't go near an aftermarket ECU if you're having troubles with simple wiring of VTEC. Wiring VTEC is extremely simple and a quick search will give you everything you need. Don't waste $100.

You need to figure out what motor you have. JDM motors are marked cryptically. "D15B" can be any number of motors from 88-00. If you take a pic of the intake manifold, we can identify it for you. If it's an OBD2 motor I suggest you sell it and get an OBD1. Besides the hassles of converting to OBD2, there are other issues with the throttle cable and vacuum lines etc.

 

[haraEK]

can someone help me with this

I have a 98 honda civic Ek With a d15b motor and i need a harness for it. Does anyone have or know someone that is selling one? Im looking for a 98 honda civic ex 5speed harness.