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New exhaust fit


VFRBIKE

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  • Member Contributer

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.

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  • Member Contributer

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. 

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  • 3 weeks later...
  • Member Contributer

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 

 

 

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