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My 01 Ws6 has a V9G vortech supercharger and had or maybe still have codes p0171 & p0174. Well I found a major vacuum leak and a bolt missing from my passenger side catalytic converter which I have repaired and replaced. I decided to replace the o2 sensors with stock Ac Delcos and after doing so I seen this image in one of my Ls1 books saying the o2 sensor on the right is a wideband o2. I replaced all 4 sensors but the ones I pulled all look like the image on the right, can anyone tell me if these are just old stock o2's or are they really wideband o2 sensors?
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01 Ls1 o2 sensor? 
