Related Clues:

• Fish minus tail in souped-up car
• Part of engine died: track going uphill
• Knocks back old type of champagne with one of those efficient types in a car
• __Tax: tax prep software
• Charger improves a car's power
• This charger improves a car's power
• Lead-in for jet or Tax
• Prefix for 'charger' or 'jet'
• ___-diesel (engine option)
• Super-speed mode
• Booster for a dragster
• Lead-in to boost
• Muscle car booster
• Supercharged
• Charging fan started the ultras running back out