O2 sensor on turbo is200

JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Supercharging & Turbo Modifications O2 sensor on turbo is200

phaebo
Senior Member

285

26-11-2022, 09:51 AM

Hi

Maybe soon i want to go turbo my is200. Now running supercharged 0,6 bar but want to go turbo starting with 0,6 bar.
Now i am wondering do i still need 2 oxigen sensors in the turbo downpipe?
Could this even cause problems?

I mean normally you have 1 oxigen sensor per 3 cilinders. The 2 sensors are seperated so wont conflict eachother. But if i go turbo my is200 i have 1 downpipe en if i stick 2 oxigen sensors in it I can imagine them both compensating for eachother and so the fueltrims go crazy.

So i was thinking just use 1 oxigen sensor and wire them both to 1 sensor

phaebo

26-11-2022, 09:51 AM #1

Rabster
Posting Freak

10,234

29-11-2022, 03:33 AM

no you cant have both running i plumbed the one sensor into both feeds otherwise i got an EML

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Rabster

29-11-2022, 03:33 AM #2

no you cant have both running i plumbed the one sensor into both feeds otherwise i got an EML

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phaebo
Senior Member

285

29-11-2022, 03:38 AM

Thats what i thought.
If one sensor measures lean and other sensor not then one will richen it up then the other will lean it out and so it goes on was my guess.

Thanks for the reply

phaebo

29-11-2022, 03:38 AM #3

Thats what i thought.
If one sensor measures lean and other sensor not then one will richen it up then the other will lean it out and so it goes on was my guess.

Thanks for the reply