O2 sensor location
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Teching In
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Teching In
Join Date: Nov 2015
Location: Jeff Missouri
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If thats coming from where the header meets to the head and that being the flange that would bolt up to the exhaust then that would be a good spot for the upstream. Remember, two O2 sensors means you have an upstream and a downstream, most cases you have one before a cat up near the head on the exhaust or just a little down from it, downstream obviously after the cat.