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Published on Jun 26, 2011
This video describes how Dynojet O2 sensor eliminators work on Honda VFR800 bikes, but is also relevant to pretty much any bike which uses a sensor eliminator. it is NOT relevant for bikes which use a Dynojet O2 sensor *optimizer*.
Your O2 sensor eliminator fools the ECU into thinking an O2 sensor is connected, but also causes a permanent "lean mixture" signal at the ECU, which will result either in a permanent rich trim in all closed loop operating conditions, or temporary rich trim followed by a midrange trim after a few minutes of riding. Either way it results in a static fuel map which can be used as a baseline for Powercommander tuning or Autotune (wideband O2 sensor) tuning.