Abstract: A particle removal apparatus is provided for connection to an internal combustion engine air intake line or exhaust line to remove particles from flowing gas, including an electrically conductive first spiral plate which spirals around and longitudinally along and is secured to the exterior surface of the electrically conductive disposal tube having a particle admitting tube opening; and an electrically conductive second spiral plate which spirals within and longitudinally along and is secured to the interior surface of an electrically conductive outer mounting tube, the second spiral plate spiraling parallel to and spaced apart a selected distance from the first spiral plate; so that the particles become charged and collect on one of the plates and subsequently enter the disposal tube. The outer mounting tube preferably is a tubular side wall of a containment housing.