1995 Honda Civic engine swap

Tiny
THE JOKER
  • MEMBER
  • 1995 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
I drop a 98 integra LS, do I have to change the wiring and ECU
Do you
have the same problem?
Yes
No
Saturday, April 11th, 2009 AT 5:17 PM

7 Replies

Tiny
F4I_GUY
  • EXPERT
You have to get an OBD1 P75 ECU which is an LS.

If you get an obd1 LS motor, the only wiring you may have to do is for the alternator and depending on which motor you have you may have to extend the oxygen sensor wiring. However, usually there is no difficult wiring involved.
Was this
answer
helpful?
Yes
No
Sunday, April 12th, 2009 AT 11:13 AM
Tiny
THE JOKER
  • MEMBER
Someone told me all I need is an obd conversion harness, what do u think?
Was this
answer
helpful?
Yes
No
Monday, April 13th, 2009 AT 3:36 PM
Tiny
F4I_GUY
  • EXPERT
If you have an OBD1 ECU you do not need a conversion harness.

Conversion harnesses are to allow you to use different OBD computers, however since you are OBD1 you do not need to do this.
Was this
answer
helpful?
Yes
No
Monday, April 13th, 2009 AT 4:55 PM
Tiny
THE JOKER
  • MEMBER
Ok, my car is a '95 Honda Civic EX(OBD1) and the motor I drop on is a '98 Acura Integra LS(OBD2), I hear is better to use the OBD1 ECU and that's what I have(P-28), in this situation can just get that OBD conversion harness and be done.(That's what a friend told me he did just yesterday and before I go spending extra money I would like to hear somebody's opinion, THANK YOU.
Was this
answer
helpful?
Yes
No
Monday, April 13th, 2009 AT 5:27 PM
Tiny
F4I_GUY
  • EXPERT
You need an obd1 p75 ecu. There is no conversion harness needed.

You cannot use your p28 ecu, the motor will not run properly.
Was this
answer
helpful?
Yes
No
Monday, April 13th, 2009 AT 5:37 PM
Tiny
THE JOKER
  • MEMBER
I HAVE THE COMPUTER FROM THE '98 INTEGRA, IT'S A P75 BUT THE CONECTORS ARE DIFFERENT. NOW I AM USING MY ORIGINAL HARNESS WITCH IS VTEC READY, WHAT DO I DO ABOUT THE EXTRA CONECTORS I END UP WITH?
Was this
answer
helpful?
Yes
No
Monday, April 13th, 2009 AT 6:37 PM
Tiny
F4I_GUY
  • EXPERT
You need an OBD1 P75. OBD1 is 1992-1995.

You have an OBD2A ecu. It will not work.
Was this
answer
helpful?
Yes
No
Tuesday, April 14th, 2009 AT 5:39 PM

Please login or register to post a reply.

Recommended Guides