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Alright so I have a S1 rb25 im having some issues with. I got everything together to do a test start and its not wanting to fire up. I have a brand new wiring harness, and just bought yj coilpacks. Im getting good spark while cranking. I also seem to be getting fuel as well. I took a 9v and tested every injector and none of them are stuck. I pulled the cas out and spun it with the ignition on and could hear all the injectors clicking. When im cranking it almost sounds like it wants to start but just never will.
So the wiring harness that came with the motor I believe came off of a NICS RB20, and it had an early style R31 ecu that was socketed and had a rom for the rb25. So since I bought a new harness I had to get a new ecu. I got a socketed Z32 ecu and made the wiring harness changes in order to use the z32 ecu. Then I installed the rb25 rom I had for it. In theory I believed it would work.
So my question is what should I be looking for here? To run the z32 ecu I was told to rewire some of the injectors. After doing that can the motor run on the ecu with the stock rom? So when I installed the rom it would cancel out the need to rewire the injectors? It sounds like the motor just doesnt have the right firing order. So im wondering how to go about rechecking all of that. Also im now using a z32 maf, but the rom isnt tuned for it yet. I wouldnt think that would have an effect on actually starting as my z32 can start up without it even connected. Could that be the culprit? Any help on the subject will be greatly appreciated, thanks!
So the wiring harness that came with the motor I believe came off of a NICS RB20, and it had an early style R31 ecu that was socketed and had a rom for the rb25. So since I bought a new harness I had to get a new ecu. I got a socketed Z32 ecu and made the wiring harness changes in order to use the z32 ecu. Then I installed the rb25 rom I had for it. In theory I believed it would work.
So my question is what should I be looking for here? To run the z32 ecu I was told to rewire some of the injectors. After doing that can the motor run on the ecu with the stock rom? So when I installed the rom it would cancel out the need to rewire the injectors? It sounds like the motor just doesnt have the right firing order. So im wondering how to go about rechecking all of that. Also im now using a z32 maf, but the rom isnt tuned for it yet. I wouldnt think that would have an effect on actually starting as my z32 can start up without it even connected. Could that be the culprit? Any help on the subject will be greatly appreciated, thanks!
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