I know this is probably obvious

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But can you cut an exhaust pipe with an Oxygen MAPP/Propane Cutting Torch? Or is that not strong enough?
Reply:You can definitely use it to cut exhaust pipe however there are better methods.  Exhaust pipe is so thin you're probably better off using a sawzall, cut wheel, ect.,  You will be left with a much better cut and less work In terms of clean up.