What?! I have had the hitch wiring running though the exhaust vent for almost two years without a single problem, including dust and we do travel down a dirt road at least twice a week.
The opening is IN FRONT of the exhaust outlets and the flat wiring covers an area of maybe 1/4 of a square inch lifting the flap on the sides of the wiring only leaving an opening of probably 1/16 of a square inch.
No vehicle is 100% sealed from the enviroment, there is absolutely no way you could be breathing more carbon monoxide at idle from your own vehicle than from the one in front of you.
The cabin filter only filters polen and particles alike, not carbon monoxide.
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2005 GTO PBM M6
2007 Suzuki XL7 Luxury AWD
2006 Aprilia Scarabeo 500 GT ABS+
2007 Roadrunner Classic iscooter "Pinky"
2006 B&S 3.5 hp lawnmower
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