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Power Fc "function Select" Question

1000AWHP

By 1000AWHP,
in Engines & Forced Induction

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Well do you have O2 sensors?

If yes - on.

If not - off.

Pretty straight forward :)

That said you do not need to have them, my tune doesn't utilise them. Previous setup/tune I was getting 700kms to a tank on FWY. Now only around 450kms so obviously the tune needs more attention without using O2 sensors.

Also to note, if you find your idle is a bit up/down it can be O2 sensor(s) failing. Turning them off is a quick way to confirm/deny they are the issue as if you turn them to OFF an idle stabilises - you know they are failing/dead.

Duncan Grand Master

Duncan

Posted
Posted

It allows you to select between the 32 and 33 type o2 sensors. I don't know which squiggle yours is set to, but if you go to sensor check and both o2 sensors flick around 0.5v average at idle, you have it set right.

If they don't average 0.5v at idle, one or both sensors are dead, or you have it set the wrong way

Don Dada Mentor

Don Dada

Posted
Posted

Yea... this is choose between r32 and r33 gtr as they use different type O2 sensors.

Not sure but the older pfc probably didnt have the option due to the fact that r33 wasnt even built at the time, but the newer pfc definitely has it.

This needs to be on for R32 and off(+ sign) for R33 gtr

But as mentioned before if you have O2 F/B control off, it should not make a difference

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