I orginally asked about o2 not getting hot enought with open headers. I was given the aswer of installing a heated o2 sensor. Well I will try this if someone will tell me how to install a 3 wire heated o2. Such as wiring diagram?

 

If you get a bosch o2 sensor there will be 2 wires that are the asame color, hook either of them to a ground and another to a 12 volt source that is only hot when the key is on, and then the las wire is the one that hooks to your current o2 wire.

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