OBDII GS-R motor in 5th gen Civic, Injectors?

My friend is looking over a car of some guy he knows. It's running really rich and even floods the engine sometimes. This is the info that I've got:
It's a '96 GS-R, '92-'95 VX Civic, he's using a OBDI ECU and wiring harness (not sure if it's the stock VX harness), he's also running OBDII injectors.
He changed over the wires for the distributor and alternator, so that the OBDI harness will plug into the OBDII Dist and Alt; everything runs fine with them.

He has a code for the O2 sensor, which he's not sure is wired up correctly (this will be the first thing being looked at). But I'm curious about the injectors. I guess what I am curious about is are the OBDII injectors okay to use with an OBDI wiring harness? I've read quite a few write-up on this swap (specifically an OBDII B-series vtec in a VX), and they all said that you have to use the OBDI injectors; but don't say why. Can anyone tell me the difference between the OBD's as it relates to injectors, and why they are so different? And also is it possible to just match the wires up correctly and have them work correctly?

I mean I'm sure the O2 sensor is part or most of the reason it's running rich, but I just want to know if the injectors are a problem as well (and to gain knowledge on the subject). Another thing I'm thinking (if the injectors are infact fine) is that the guy said he had his ECU chipped. It's a P72, so it's not like it's a chipped P28 or anything; but we're not even sure if they guy really has it chipped or not. But if it is chipped with one of those e-bay chips, I know it would give it more gas; and along with the O2 that could cause the issues.

Any help and information on this would be greatly appreciated. I just want to try and help cover all bases on this issue, so he can get the job done quickly. Thank you.

well no response, but oh well.
Here's some new information. The guy bought the car with the motor already swapped in, and it ran like garbage from the first day. Now tonight (after working on it for 5 hours) we find out that it's a CX and that the engine harness is and LS OBDII. So the injectors are fine. The ECU is also definently chipped too. My buddy ran the ecu codes and it's picking up 1 - O2 sensor and 3 - MAP sensor. He checked the timing and the ignition timing was off. So now that it's semi correct (this will be done completely with a timing light tomorrow). the motor runs almost perfect. Now we're thinking that the O2 was wired incorrectly; either just wired wrong or the secondary O2 wiring was used for the primary O2 sensor. The guy also had a wire running from the O2 sensor to the TPS. He said some kid tried to fix the O2 problem, and that the O2 wasn't getting any power at all; so he hooked it up the the power on the TPS. This thing is such a hack job it's not even funny. The guy and my buddy are going to work on this tomorrow night, so hopefully everything will get fixed and will work. This is just another example as to why you never let someone else work on your car unless they and you know exactly what the hell is going on :shakehead

well no response, but oh well.
Here's some new information. The guy bought the car with the motor already swapped in, and it ran like garbage from the first day. Now tonight (after working on it for 5 hours) we find out that it's a CX and that the engine harness is and LS OBDII. So the injectors are fine. The ECU is also definently chipped too. My buddy ran the ecu codes and it's picking up 1 - O2 sensor and 3 - MAP sensor. He checked the timing and the ignition timing was off. So now that it's semi correct (this will be done completely with a timing light tomorrow). the motor runs almost perfect. Now we're thinking that the O2 was wired incorrectly; either just wired wrong or the secondary O2 wiring was used for the primary O2 sensor. The guy also had a wire running from the O2 sensor to the TPS. He said some kid tried to fix the O2 problem, and that the O2 wasn't getting any power at all; so he hooked it up the the power on the TPS. This thing is such a hack job it's not even funny. The guy and my buddy are going to work on this tomorrow night, so hopefully everything will get fixed and will work. This is just another example as to why you never let someone else work on your car unless they and you know exactly what the hell is going on :shakehead

Make sure the dude working on that car is certified ASE L1 Advanced Level Engine Performance Specialist. They know their shit...

I have no clue if he is or not. I know he's certified for a few things, not sure for that though.
But the car is still being worked on. The O2 and MAP sensor are the only things left that could be the problem. He's checked the wires and they are all in the correct place. He's going to make sure the sensors are both gettting power; tomorrow night.

sup i got a ? for ya, see if this blows ur mind as well as mine, i got a 91 CRX, just replaced the distributor, all electronics work, i'm getting feul and the timming is right but it won't run, so far it has defied everything i have ever learned about engines, can u help w/ any suggestions?
thanx

sup i got a ? for ya, see if this blows ur mind as well as mine, i got a 91 CRX, just replaced the distributor, all electronics work, i'm getting feul and the timming is right but it won't run, so far it has defied everything i have ever learned about engines, can u help w/ any suggestions?
thanx


Getting fuel where? In order for engine to run you need three things. Fuel, Compression, and Spark. If you got them all then your engine should run.

Check your sensors MAP, MAF, ECT, etc... and make sure theyre sending proper signal to your ECU. An out of range signal from a bad sensor could caused ECU to send a wrong command to your engine.

For example if your ECU is telling your engine to run very lean because of a low voltage signal from a MAP sensor (say sensor is measuring a zero air pressure). That means injectors will not even spray fuel inside your combustion chamber even if your fuel pump is running. and that causes your engine not to run.