Clean your fuel and exhaust system with Cataclean.  It reduces carbon build-up and cleans your vehicle's catalytic converter, oxygen sensors, fuel injectors, and cylinder heads.  Lower your total hydrocarbon emissions by up to 50% (results are dependent on vehicle condition and driver habits). Use Cataclean to fix drivability issues (power reduction, hesitation, hard starts), to pre-treat before an emissions test, or to extend vehicle life.  It is easy to use, simply pour into the fuel tank and is 50-state legal.