XzzYzzX

Ok My friend is putting a jdm d15 into his 93 civic hatch dx i am really confused about wat to do about wiring a couple people are telling me to find a ex si harness like the part u plug into the ecu and rewire everything but if i am running a p28 isn't both the motor and ecu obd1 and all i have to do is the 4 vtec wires and the o2 senor. If anybody could help thanks......i tired to seach but its not working right....

turbo_ef9

just use the dx harness.. find the vtec sol and oil press plugs.. wire vtec to ecu.. easy as that.. have fun

XzzYzzX

thanks cause i was looking at this site
http://hybrid2.honda-perf.org/tech/sohcvtec.html and it really confuse me wit the wiring do u need any other vtec plugs beside that....

Also does anyone have the ecu pinouts where i need to wire it to for a p28......

turbo_ef9

that was into a 4th gen buddy.. 88-91.. this motor is going into a 93.. just swap the motor.. use the dx harness.. use the vtec solenoid plug and vtec oil pressure plug.. run the wires to the ecu.. one going to a ground..

http://tech2.hybridgarage.com/..._obd1

A4-VTEC solenoid
D6-VTEC oil pressure...

enjoy..

BauleyCivic

Its 3 vtec wires son. Use the stock harness, P28 ECU, and the 4-wire 02 sensor from the stock motor.

The P28 ECU plugs right in, you all you’ll need to do is wire the VTEC up. First, you’ll need to get an engine plug from a junkyard for the VTEC solenoid oil pressure.

You can see mine here, it’s big and yellow:


Here is what the back of your ECU plugs look like:


You’ll need to run the blue wire (or whichever color is from the plug) to pin D6, and then run the black ground wire from the plug to anywhere on the motor. You then need to run the green wire from the VTEC solenoid to pin A4.

THAT’S IT! YOU’RE FINISHED! Make sure you’re not throwing any CEL’s, if you are, go back and check your work.

turbo_ef9

i know it's 3 wires.. if you saw i said ground.. and the dx has a 4 wire o2 also..

BauleyCivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eli_vang &raquo;</TD></TR><TR><TD CLASS="quote">i know it's 3 wires.. if you saw i said ground..</TD></TR></TABLE>

I was talking to the thread starter...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XzzYzzX &raquo;</TD></TR><TR><TD CLASS="quote">if i am running a p28 isn't both the motor and ecu obd1 and all i have to do is the 4 vtec wires and the o2 senor. </TD></TR></TABLE>

turbo_ef9

my bad... it had a reply back from eli_vang so you know... sorry homie..

XzzYzzX

Thanks everybody for the help...