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Chat General Discussion About The Nissan 240SX and Nissan Z Cars |
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#1 |
Leaky Injector
![]() Join Date: Apr 2007
Location: Chattanooga, TN
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Which harness for a Z32 ECU on RB25 motor?
I posted a similar thread on another subsection but I haven't got a single hit, thought this section might be a bit livelier.
I've seen many people use the Z32 ECU to run an RB25 with better results than the RB25 ECU. I am considering putting an S2 RB25 into a Z32 shell, so it's even better for me to run a Z32 ECU, so the body harness stuff plugs right in. Anyways, my question is which new harness do I buy? Do I buy an RB25 harness with the Z32 ECU plug on it, or do I buy a Z32 harness and just connect the proper wires to the proper sensor on the RB25 motor? |
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#2 |
Zilvia Member
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z32 ecu would have issues due to z32 having 2 o2 sensors where rb25 only has one sensor. you might want to look into using a maxima ecu and no wiring is involved with that ecu. its plug and play, just has to be tuned for rb25. hope this helps.
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#3 |
Leaky Injector
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Location: Chattanooga, TN
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I've read Nistune's walkthrough on modifying the Z32 ECU to be prepped for RB25 signals. Patching the O2 circuits together, modifying the fuel temp sensor circuit, etc.
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#5 |
Leaky Injector
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Location: Chattanooga, TN
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Because I am putting it into a Z32 as the op said, that way everything plugs right in. Plus, having a tt Z32, I know tons of Z32 guys with parts to sell and already got one on it's way for $65.
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#6 |
Zilvia Member
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Not quite sure what you mean but the ecu plugs into engine harness and nothing else so it doesn't matter what ecu (rb25 or z32 or maxima) you use.
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#7 |
Leaky Injector
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Currently researching a lot about this, im gonna be using a Stagea NEO Rb25 with a Z32 ecu, so far my understanding is, Z32 + R33 Engine loom (S2 Rb25 Wiring loom if im not mistaken) will work perfectly by following Nistune's guide if its a S2 RB25. The S1 Rb25s i havent read much about them, should research if you have one of those.
I even matched each ECU pin from both pinouts (R33 RB, Z32)and arrived at the same steps as Nistune indicates. |
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