D16Y8 swap into EG

ECU, Wiring, Sensors
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D16Y8 swap into EG

By airride
- Wed Aug 13, 2008 4:02 am #65678 Ok. I got a 93 EG LSI 1.5 D15B2 with obd-0 p04 ecu. I got a buddy who is hooking me up with his D16Y8 (complete) with harness, ecu, intake, dizzy etc. Now i want to swap in the D16Y8 with the ECU Harness. Would I be able to splice the dash harness wires from my Eg harness and adapt in my obd2 D16y8 to work? Thanks
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By york62
- Wed Aug 13, 2008 1:42 pm #65744 I think you will have to look into getting your self one of these.
http://www.boomslang.us/obd1to2.htm
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By airride
- Wed Aug 13, 2008 5:39 pm #65770 I don´t think you understood right. I want to use the obd2 ecu harness in my EG. My problem is the 99 Fuse box has diferent plugs the the 95. need to use the plugs from my old harness and cut the plugs off the obd2 harness and make the whole obd2 harness fit my EG.
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By teal_dx
- Wed Aug 13, 2008 6:13 pm #65772 Why is your car OBD0 to begin with instead of OBD1? I thought all the 92-95 civics were OBD1...
If it were OBD1, you would only need an OBD1 P28 ecu (from D16z6). The Y8 is plug and play with the OBD1 engine harness, except for the distributor. (you can use an OBD1 dizzy from a 1.5L on the y8 head though, so you won't have to do any splicing) There will be a couple extra sensors on the y8 engine that OBD1 does not use (like the knock sensor) just ignore them and don't try to plug anything into them.

If you try to install the entire OBD2 ECU & engine & cabin harness into your car, you'll run into the fuse box issue like you mentioned, and more similar instances. That's the extremely difficult route to take.
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By Classiccarsrule85
- Wed Aug 13, 2008 6:13 pm #65773 you do not want to use obd2 way too much work but you should switch your car over to obd1 and if you want to use the ecu just get a obd1-obd2 harness and use a Z6 wire harness and some of the sensors need to be changed but thats it alot easier than obd2 and heck no 2 o2 sensors just one....
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By teal_dx
- Wed Aug 13, 2008 6:28 pm #65775
Classiccarsrule85 wrote: if you want to use the ecu just get a obd1-obd2 harness and use a Z6 wire harness and some of the sensors need to be changed but thats it alot easier than obd2 and heck no 2 o2 sensors just one....


Definitely don't use the OBD2 ecu, you'll have all kinds of check engine lights.
OBD2 cars have things that OBD1 cars dont have (second o2 sensor, knock sensor, more emissions, crank sensor etc.)
An OBD1 ecu (use the P28) will run a y8 just fine :thumb:
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By suspendedHatch
- Thu Aug 14, 2008 3:50 pm #65940 It will run it just fine but the timing maps between the Y8 and Z6 are different due to the redesign in the heads. The Y8 was made much more efficient and as a result, requires less timing advance.

Also the Y8 was designed for more power down low. The VE tables are pretty different than the OBD1 heads. The Accel modifiers are quite different.

Essentially a Y8 with a P28 wont make as much power and fuel economy as a Y8 with the correct ECU. Not to mention that the throttle cable and charcoal canister, among other things, are different between OBD1 and OBD2 cars.
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