Boost with O2 sensors? How do I do it?

[bighitbiker3]

Ok guys well my turbo is starting to go in mid this week. I have one question though. When installing where the hell do my O2 sensors go? Am I going to have to ditch some? Drill new bungs? I will be running and ESC-1 so I know that I need at least 1 O2 to wire that in too, but where do they all go? This is on a '99 GS300 too.

Thanks,
Elliott

[98mkiv]

if you are running with a gutted cat then just use the ONE rear 02 sensor on the gutted cat. Take it's two ouput wires and splice them together to feed the two front inputs to the ecu.

IIRC you are running a GS3 so you may need to get an o2 fooler or a splitsec box to fool the ecu so it does not self tune. there are a few ways to do it, each has its pros/cons.

[bighitbiker3]

Yea, I think im just gonna pull all 4, then just pull the CEL bulb. I have a split sec box but i'm not sure if I want to use it.

[98mkiv]

that's the easiest way if you ask me.

[dominoMKIV]

I'm going to be running Catless and will also be running a wideband, can I splice the two signlas into noe O2 sensor and then have another O2 sensor for my wideband?

-chris

[98mkiv]

not unless your wb02 has a narrowband or programmable output like the LC1 from innovate. The innovate has dual programmable outputs, a very nice unit and at a good price.

Thanks,
Mark