Related Clues:

• Speeds up
• Vrooms the engine
• Prepares to drag
• The R in RPM
• Tach reading
• Intensifies, with 'up'
• Races
• Steps on the gas
• Guns it
• Increases motor speed
• Tach measure
• Gives some juice to
• Accelerates, as an engine
• Fires up, as an engine
• Pulpit occupants, briefly