Question about 1998 Gs3 oxygen sensors

[davi99]

Hey guys i have been doing research around and i have not yet found an answer to this. On the gs300 there are 4 oxygen sensors but the turbo kit there are 3 sensor bungs and in addition there is aem uego too. i read around that you splice the oxygen sensors together making them into one. and the heater circuits too?? i will be running the aem fic as my engine management.

Thanks you,
Dave
Happy Holidays

[WreckedIS300]

Hey dave, do you have two catalytic converters? one for the first three cylinders and one for the last two?

[davi99]

yes i do. it should be similar to the is300

[WreckedIS300]

Yeah so what I did was put the stock o2's in the last two holes on the dp and put my aftermarket wideband in the first bung. The last o2's can be plugged in later on but you wil need a cat and I don't know if an aftermarket cat will still be okay if they're not as good or whatever. You might wanna check token solution to see if they make an o2 sim to replace the post cat o2's.

I know you wanted to get ahold of me quicker but the forum is the best. I check it at least everyday. That said I haven't checked it as often because I've been out of town or I'm spending a lot of my time in the garage. But when I get home I'll be checking it more regularly.

[davi99]

ha ha thats cool. i guess this way will work too. now im waiting for another turbo to come in so i still have some time to do research. the current one i had the hot side of the turbo is 1.16 i believe and its a huge snail, and it will not clear the throttle body. so im forced to buy another turbo. im hoping to sell this big t77 snail for 100 dollars or so.

[Qphoton]

You can simple unplug & disconnect all O2's and reset ECU when IGN off (by 2 relays). Then stock ECU will run in open loop mode allready )
I think this is best way for tuning because its simple & cheap & fast.