Hi guys ! I'm new here and i have a question regarding placement of narrow band o2 sensors on my turbo build. I'm putting a 2000 vortec 5.3 in my 2001 s10. It's a single turbo setup with a crossover under the trans. Some people are saying that you can't have your narrow band o2 sensors ahead of the turbo because it will damage them from excess heat and pressure. Also since I'm feeding the left side exhaust into the right side I don't see how they will read properly. I'm using the stock computer .This is my first turbo build and I can't find any info on this subject. Any help would be appreciated.
truckdoug thanks for your response. I live in Pa.and have to pass inspection ,so i will have to put them somewhere.If I put them after the turbo ,can i just run one NB and split the signal? I plan on putting my WB about 18" after the turbo. How close can the NBs be to the turbo? thanks
i'm not sure you can "split" the signal between the two banks since the pcm reads a direct voltage and splitting one would be dividing the voltage by two, making each bank read half the voltage it wants. you might be able to go into the tune and scale the voltage down but i have no idea where to start...of if it is even that easy. might just be hardcoded. maybe ask on ls1 tech PCM section there's some super smart cats in that section.
i am running two, just after my WB sensor about 20" from the turbine, staggered from being in the WB sensor's "shadow" ( i have no idea if thats a thing, but every set up ive seen does it like that)