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Thread: VQ37 Turbo A/F Sensors.

  1. #1
    Tuner in Training
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    Jan 2021
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    VQ37 Turbo A/F Sensors.

    Hey Fellas

    I have a VQ37 Single Turbo and both A/F sensors are in the one down pipe. Having erratic issues with one bank trimming way more than the other. Basically fighting each other. Has anyone dealt with this issue before. Any easy fix? I know in other ECUs you can nominate which 02s the ECU utilises for feedback.

  2. #2
    Tuner in Training
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    Nov 2020
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    Why are they in one bank? Seems counter productive especially on one of these engines. I'm running a single turbo as well, a/f sensors in the stock manifolds, no problems so far. Genuinely curious.

  3. #3
    Senior Tuner SultanHassanMasTuning's Avatar
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    Nov 2009
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    if you have widebands, just openloop the car and tune that way.

    dont rely on stock sensors for boost
    Follow @MASTUNING
    Remote Tuning Sultan@mastuning.net
    Contact/Whatsapp +966555366161

  4. #4
    Tuner in Training
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    Jan 2021
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    Engine is running VQ30 manifolds on the VQ37 so there is no facilities for sensors in factory location. It does have an aftermarket wideband with a LSU 4.9 for on boost control. Only reason I want to keep the factory sensors happy is for closed loop under cruise - fuel economy.