Will not harm Catalytic Converter or Oxygen Sensor Beats the bottle boosters Octane Booster High Performance Racing Formula Track tested to be 9.2% faster, Dyno-tab Maximum Strength Octane Booster provides faster acceleration. Adding the correct dosage at fill-up can give you a 10 point boost in your octane rating and additional tablets can increase it 17 points! Fast dissolving and safe for catalytic converters and oxygen sensors, Dyno-tab High Performance Octane Booster has been shown to ‘beat the bottled boosters’ in independent lab tests. Please follow dosage instructions on package.