karmannghia

I got a b18c1 with an ODB 2 ECU. It is going into my 92 EG DX. I am kind of confuse of the wiring. I did a search and found some information stating that you need an ODB 1 (p28) ecu off a civic Si, while others say you can get a switch-over harness. Are both routes correct? What are some of the advantages or disadvantages of one over another? I can find an P28 cheaper than the switch over harness, and possibly even chip it for future mods, but I dont' wanna take the risk of buying a nonfunction ECU off the web

Blown90hatcH

Keep your car OBD1....get an OBD1 ecu....That is all you need

fowler!

if you run a P28 on a GSR motor you lose alot of torque due to the dual butterflies that GSR motor has. P28s are only meant for single butterfly setups like that of the B16 and Type R motor.

Get a skunk2 manifold and it'll be fine to run a p28. Single butterfly.

Stay OBD 1

Kalokohan

I would go with a 94-95 GSR ecu and skunk2 manifold.

karmannghia

Will the GSR odb 1 Ecu needs a switchover harness or will it plug into my existing 92 EG DX wires?

fowler!

It'll plug right in.

All obd 1 harnesses plug into obd 1 ecus
the same goes for every other obd.

bojangs

well if he already HAS a p28 ecu it'll be cheaper to have it chipped than buy a new ecu.. and the chipping is $150 for any program you want.. talk to katman or locash.. they're prices are identical. plus, you'll have much more aggressive fuel/timing maps for half the cost of a gsr ecu.. i say stick with the p28 unless you find another CHEAP obd1 ecu..

fowler!

yeah, but if he has a gsr motor sans a skunk2 manifold, the results of having a chipped p28 will be less than that of a obd 1 p72.

No control of the secondary butterflies nets a loss of like 10ft/lbs of torque.

but, you could buy a skunk2 manifold and be done with it.

karmannghia

Will I have to switch the distributor to a ODB 1 type too? Or would my existing one work, which came from a 99 GSR engine

Apex i ITR

What year is the motr because the ECU may still throw a code. I got that jumper harness (OBD1 to OBD2). I think you e-mailed me. I use my P28 ECU (Rechipped by Kenji to run the motor now. Besides an idle problem the car runs fine (That and my transmission is a big ? as to what kind gearing I have).

karmannghia

bone stock 99 gsr USDM engine. trying to put that into a 92 DX EG. Yes, I think I emailed you about the harness. I am trying to figure out the best way to convert from ODB2 engine into a ODB1 car. I am seeing people doing it diferent ways. Which part of Atlanta are you in, I am in Norcross. I might need your help in the swap..


[Modified by karmannghia, 5:29 PM 11/13/2001]

Kalokohan

Use the distributor that comes with the engine. Are you buying a swap package or do you just have the engine and are piecing the rest together? If you have a package swap, it should come with it. Basically, you can either get p28, chip it or get a P72(OBDI) and a skunk2 manifold. Going the P28 route is cheaper(not by much) but going the P72 route will be more beneficial in the long run.

karmannghia

I bought the whole set up (engine, ecu, tranny, mounts, shift linkage, ect..). Gonna try to put it in this weekend.

Thanks everyone for being helpful with my questions..

Kalokohan

Did you get axles? Those are important. I have a testpipe I could sell you that bolts from the header to the exhaust until you get a calalytic converter custom exteded by a muffler shop.

karmannghia

You know, I need that too. It looks like I am digging myself a deeper hole from the moment I bought that 92 EG. It came with the axles...exhaust manifold. I was planning to drive that without the cat. or muffler to the shop and have them custom made cat. put on. Imagine what the neighbors will think when I pull that car out of the basement... I presume the test pipe will fit perfectly from the header to the cat back Apexi right? Because I got the Apexi cat back exhaust on it already. Who knows I might drive that around without the cat until my next inspection which won't be for another 11 months...

Apex i ITR

Sounds like we went down the same road. You call me @ 770-739-5934 if need any help or want to ask more questions about the jumper harness.

Civicboy

Why is the OBDI ecu so much better. If it just a daily driver and you really don't want to go all ***** out on it. I think you should just keep the OBDII ecu and get a jumper. Unless you can find a OBDI ecu, thats the hard part