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  1. o2 Simulator for downpipe

    Intake And Exhaust
    2019 civic SI. My state only requires monitors working and does not sniff the exhaust for emissions. I am designing an o2 simulator for the downstream sensor so that I can run my downpipe and pass emissions. Since I am modified already and can not get the proper readings, can someone provide me...
  2. RPMS idling at 1500 but dropping down to 700

    10th Gen Civic General Discussion Forum
    I have a magnaflow exhaust and aem filter on my car. After I had it installed I noticed the rpms are at 1500 and staying there after startup then dropping down after that. Is this normal?? Im also noticing the rpms are resting about 500rpm higher in each gear. Also the cars way faster just off...