The Focus Screamin Demon Coil Pack allows spark plug gaps to be opened up to a whopping .065"! This larger plug gap exposes more spark in the combustion chamber for a more complete burn of the fuel mixture which increases horsepower, gas mileage and keeps spark plugs cleaner. The Screamin' Demon Coil features brass terminals, which are more conductive and resists corrosion longer than the aluminum terminals on the stock coil. The Screamin Demon Coil is too hot for stock plug wires so a high quality wire such as our LiveWires must be used with it. The Screamin' Demon coil mounts in the original factory location with no modifications.