Granatelli Hi-Performance Spark Plug Wires exhibit near 0-ohm resistance with RFI/EMI outputs less than O.E. because they utilize an exclusive solid stainless connector cable with stainless snap lock spark plug connectors and a unique EMI/RMI protection ring. Their wires increase power to the spark plug up to 25% over stock. High temperature silicone boots and a 8MM jacket with fiberglass reinforced braid resists temperatures up to 500 degrees F. Installation is as easy as changing the factory units. Engineered to exceed OEM specifications and OBD-II computer safe.