Related Clues:

• Guns
• Engine speed, for short
• Lives
• Opposite of idles
• Guns, as an engine
• Guns, in a way
• Rotations, in garages
• Enlivens, with 'up'
• Increases
• Livens (up)
• Stirs (up)
• Tach readings
• Excites
• Speeds (up)
• Perks (up)