VFRBIKE Posted November 3, 2019 Share Posted November 3, 2019 Going to fit a complete stainless exhaust soon. Was wondering what happens to the 2 sensors that enter the old pipes underneath? Can they just be left unconnected? Thanks in advance.... Link to comment Share on other sites More sharing options...
Member Contributer Duc2V4 Posted November 3, 2019 Member Contributer Share Posted November 3, 2019 Yes they can but you need to terminate the leads. Power Commander sells terminators for use with their tuning modules and they come with the mating connectors. You can also build your own using some electronic resisters but I don’t recall the ohm rating of them off hand. I’m sure someone here can chime in on what and how to do it yourself. Link to comment Share on other sites More sharing options...
Member Contributer Cogswell Posted November 3, 2019 Member Contributer Share Posted November 3, 2019 Two 330 ohm resistors are needed, 1/2 watt or more. More wattage doesn't hurt - you just don't want them too small or they'll fry. Link to comment Share on other sites More sharing options...
Member Contributer Mohawk Posted November 24, 2019 Member Contributer Share Posted November 24, 2019 Blimey the old myth still persists! You only need one resistor across the +/- terminals of ONE O2 sensor power lead. The resistance is NOT really important, as the ECU only detects voltage. This is ONLY required to keep the Fi light off in the dash. But the ECU will default to a stored RICH map, as neither O2 sensor is delivering Lambda readings. The ECU will also record O2 sensor error in its error log. So if you fit an exhaust without O2 ports for your Lambda sensors, then you should really add a Fuel Management system to get the bike running its best & keep fuel consumption reasonable. As always YMMV Link to comment Share on other sites More sharing options...
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