Related Clues:

• Tach reading
• Enlivens
• Promotes big-time
• Invigorates (with "up")
• Intensifies, with 'up'
• Builds up
• Gives the gun
• Races
• Steps on the gas
• ___ up (energizes)
• Guns it
• Enlivens (with "up")
• Increases motor speed
• Invigorates (with ''up'')
• Picks (up)