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True Brand GDI Complete Clean 3-Step Kit is a hotter, more aggressive formula that chemically cleans GDI fuel systems from the gas tank to the exhaust. GDI Complete Clean requires NO ENGINE TEAR-DOWN and can be applied by techs of all skill levels! True Brand GDI Complete Clean 3-Step Kit cleans and protects against deposits, removes water and fights ethanol, cleans emissions control systems, and removes harmful deposits from induction systems, intake valves, injector tips, and combustion chambers