Does Apexi Pfc Use O2 Sensors?

[R31 Gagz]

Hey All,

Had my 32 gtr up on the hoist the other day and noticed the O2 sensor wasnt hooked up, the plug was just sitting there with no connecting plug to the loom\wire harness in sight. Im running an Apexi PFC and it seems to run fine without it, does it need to be connected though?? Im thinking I might get a bit better fuel economy if it was hooked up.

Cheers!

Gagz

Edited August 17, 2007 by R31 Gagz

[The Mafia]

you can actually turn the feedback off on the powerfc and then it won't worry about adjusting the fuel in closed\open loop mode.

[Cubes]

They run fine without it and return decent fuel economy providing its been tuned well.

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The o2 sensors often get disconnected because they are shagged and when shagged cause driveability problems.

[R31 Gagz]

Cool, get a bit over 500km per tank on the highway, not sure about town but i think its pretty good.

Thanks guys.

Gagz

[R31Nismoid]

If you got to the EPA etc, you'll need them connected. Only catch there

[Richieb]

They tend to mess-up the tuning a little, but then again depends on the state of tune you are running.

Me, I dont use them.

[Beer Baron]

Hey All,

Had my 32 gtr up on the hoist the other day and noticed the O2 sensor wasnt hooked up, the plug was just sitting there with no connecting plug to the loom\wire harness in sight. Im running an Apexi PFC and it seems to run fine without it, does it need to be connected though?? Im thinking I might get a bit better fuel economy if it was hooked up.

Cheers!

Gagz

I think you are confusing the O2 sensors with the cat temp sensor. I would say what you say was the cat temp sensor disconnected. it doesn't matter at all. it's purely there to set off the cat temp warning light to tell you the cat is getting hot. the O2 sensors can be seen inside the engine bay from above. one in each dump pipe and it's best to have them connected for fuel economy but it's no big problem if they are disconnected and you have an ecu (like power FC) that you can tune the light load cruise area of the map.

[R31 Gagz]

Thanks but its definitely the O2...I know what one looks like as Ive replaced three of them in the past on other cars and I could see the unplugged cable leading straight to the O2 that was connected to my dump pipes....couldn't see it from above as Ive got two turbos and two 4" turbo dump pipes blocking my vision

Cheers!

Gagz