Right now my exhaust exits right below the bumper on the drivers side. I could get it to route just above the bumper with a slight bend just in front of the muffler and a 6 inch extension. The exit would be right in the slipstream then and hence in a slight vacuum.
I would have to cut the body work which makes me uneasy with this mod.
Edit: CO poisoning isn't a problem on diesels unless they are way out of tune. Fumes wouldn't getting into the passenger compartment wouldn't be a problem anyway
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