2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Minimum needed to run S5 engine on stock ecu

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Old Oct 21, 2004 | 01:21 PM
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incendui's Avatar
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Minimum needed to run S5 engine on stock ecu

What sensors need to be connected for the S5 ecu to function and not go into limp mode? Theres a reference in this thread https://www.rx7club.com/forum/showth...ht=minimum+ecu
that S5s need more than an S4, but it doesnt say what they are...

I need this since I'm using the stock ecu as a stop gap until I get my stand-alone ecu sorted, and I'll be using a custom wiring harness.
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Old Oct 21, 2004 | 04:17 PM
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Infini IV's Avatar
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To run safely:

From ecu harness:
TPS, CAS, AFM, OMP, water thermo, air temp, injectors, grounds

Elsewhere:
leading + trailing coils
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Old Oct 21, 2004 | 04:24 PM
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CAS, TPS, MOP, MAS, Coolan Temp, Injectors, Injector Resistor Packs, Coils.

I think thats it did I miss any?

blast! beat me to it.
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Old Oct 21, 2004 | 04:30 PM
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Thanks, that was just what I was looking for.

I assume the pressure sensor is necessary also (this is a TII)?
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Old Oct 21, 2004 | 04:42 PM
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^^ Oops, I knew I was missing one! You are correct.
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Old Oct 21, 2004 | 04:45 PM
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need that for N/a and T2
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