Will a USDM ECU properly run my JDM GSR? I thought I remembered someone telling me the pinout at the ecu plugs would need to be changed, so if you know the answer to this, please help, attempted a search but not much luck, need to get my car running its so very close to being complete!

 

P72 GS-R ECU.

 

Depends on year of chassis, year of ECU, year of wiring. I know for a fact that there are some hoops you have to jump through on an OBD2 car/engine/ecu because I've done it before.

Reference the ECU pinout diagrams on this page:
http://www.ff-squad.com/technet/

Look up pinouts for whichever ECU you're using. It should tell you everything you need to know.

 

That's not exactly what he's asking. He's already got a P72, and he's asking what he needs to modify to make it work.

 

i actually do not have a P72 yet, im holding off on getting one until I figure it out, I should have been clearer, my apologies, the car is a 95 civic DX coupe, it is already wired to run the motor, I have had a full engine harness and interior harness tuck done, but there was an incident and the old ecu got damaged so I need a new one.

 

no because the usdm gsr uses a pressure switch+solenoid and i believe a jdm motor only has the solenoid

 

for the vtec control you mean? dammit cause for some reason my harness only has the vtec soleniod and no plug on the oil pressure switch..but if that switch is wired up then i COULD use a usdm ecu?

the whole story behind the missing plug was that my engine harness was made using an ITR harness which didnt have the pressure switch, but if one was added on then i could use the gsr ecu?

 

this is the 2 pin plug right? cut the ground wire, put a lead on and ground it to a nearby bolt. run the other wire to the appropriate pinout at the ecu and you're golden

 

Whoops, I missread that. If you don't have a vtec pressure switch you can do one of 2 things to run a USDM ECU:
1. Use a USDM Vtec solenoid with pressure switch
2. Tap the wire for vtec pressure switch signal into the the wire for the vtec solenoid.

 

so i run one wire to ground and the other to D6 and i should be all set?

 

yes do that...but you need the usdm solenoid with the pressure switch attached

 

the vtec solenoid and pressure switch have to be wired together? why cant i just run the non ground from the pressure switch to D6?

 

they dont have to be run together, just the two wires. 1 ground, 1 to the ecu. thats assuming you have the usdm piece with the pressure switch and solenoid

 

also JDM motor only has (1) o2 sensor....a USDM computer is going to be looking for (2) o2 sensors...

CEL after about 5 minutes of running it....

I have to plug in a OBD2A GSR ecu to be able to pass inspection....(NYS)

but i have someone who doesnt care about the o2 sensor and can get past that...

 

who said anything about oxygen sensors lol and any obd1 civic only has 1 o2

 

yes sir, bought a bosch O2 today, installed and that CEL is gone, as for the cylinder sensor, the distributor had oil in it, and we took the distributor apart and looked at the innards and it looked like clyde or whoever mixed and matched, some of the parts had P06 stamped on them and that is for a civic dx i think

so all i need now is a distributor, timing belt, water pump, axles and an OBD1 GSR ECU, so if anyone knows of anyone with an unmolested one, let me know!

 

I think my friends brother has a gsr ecu, i will check with him and get back.

 

thats because all b series and d series distributors use the same cap/rotor...stampd p06. ever notice that gsr cam seals say p30 for a b16? same thing. those o-rings in the distributor tend to go bad with age

 

He doesnt have the ecu anymore.