O2 simulators

Joey Jun 23, 2017

  1. Joey

    Joey First Fill-Up (of many)

    Messages:
    304
    Location:
    Indianapolis
    I'm installing headers on my vg33 motor and I want to run O2 sensors in the front bungs and O2 simulators in the rear bungs. Or how have other people did it with headers
     
  2. Muadeeb

    Muadeeb Bastard Admin from Hell Admin

    Messages:
    15,522
    Location:
    Dallas
    Put a CEL eliminator in line with the rear sensor. It'll move the sensor out of the exhaust flow enough to trick the ecu into thinking there's a working cat there.
     
  3. Joey

    Joey First Fill-Up (of many)

    Messages:
    304
    Location:
    Indianapolis
    hum... i would then nee to purchase new o2 sensors, mine are junk, they won't come out of the pipe
     
  4. Muadeeb

    Muadeeb Bastard Admin from Hell Admin

    Messages:
    15,522
    Location:
    Dallas
    Problem with simulators is they don't really work. The ECU is looking for a varying signal over time. Either too high or too low for too long and it throws a code. Better to spend some elbow grease to free the old ones, or spend the $160 to get a new set.
     
  5. Joey

    Joey First Fill-Up (of many)

    Messages:
    304
    Location:
    Indianapolis
    Alright, I'll spend the 160 on new O2 sensors and the CEL eliminators. Now I just need pipe to go from the headers to the muffler. NO cats at all on this. They want like 250. per side for the secondary cats. WOW Any ideas? Maybe a couple of cherry bombs and dumb before the rear axle. I'm a little concerned with this because when we wheel we are driving slow or stopped.
     
  6. Muadeeb

    Muadeeb Bastard Admin from Hell Admin

    Messages:
    15,522
    Location:
    Dallas
    an exhaust shop will be your friend. What you're asking for is cake
     
  7. 1stGENXterra

    1stGENXterra Test Drive

    Messages:
    38
    Hey guys, just finished installing Doug Thorley THY-465-L-C headers, now to my O2 Sensors. My upstream passenger side 02 is bigger then the bung in header. I noticed the upstream O2 Sensors are bigger then the downstream 02 sensors. What can I do? Thanks guys
     
  8. 1stGENXterra

    1stGENXterra Test Drive

    Messages:
    38
    I forgot, can I just buy a downstream (the smaller O2) 02 sensor and install in its place?
     
  9. Prime

    Prime Some Kind of In Charge? Admin

    Messages:
    33,099
    Location:
    Suffolk, VA
    Go buy new O2 sensors. All 4 should be the same size and just have different wire lengths.
     
    1stGENXterra likes this.

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