try hooking up a can of pepper spray on a line to your cat. that way when the theif starts pulling on it the pepper spray will get em.
Somehow I see bad things happening to a pressurized line under high heat
guess you could hook the exhaust system up to a wire running from your battery to a switch in your dash. It'd be a drain (dunno how big) but could be a
experience for anyone cutting on the exhaust
