Pro shock’s effective formula safely dissolves deposits and contaminants from intake manifolds, intake valves, combustion chambers, EGR valves and passages, oxygen sensors and catalytic converters thereby restoring lost performance and fuel economy. Pro Shock 1053 is packaged for used with our exclusive vacuum tool (VT001) or Pro Shock 1054 is packaged in a convenient pop top can for use with traditional pressurized cleaning equipment. Pro Shock contains no excess hydrocarbons and allows emissions testing to be performed immediately after servicing.