Cutting factory exhaust for Wideband O2

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Matthew Jeschke

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I'm trying to get my wideband O2 sensor in the exhaust on driver side just down from where the exhaust manifold mounts. I'm really nervous about welding on exhaust while in truck. Curious what's most effective way to cut and patch the exhaust so I can get it out? I want to get that side of the exhaust out so I can weld on it outside the truck.
 
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