"I was testing the truck to see how much power it is putting down to the ground, but these rc's are made for racing.  The winner of the races we run actually wins $250 for a qualifier win.  At the end of the season which we have an 8 month season the top 32 racers from each class actually run in a championship with the potential to earn $2,500." He lifts the cover on the truck to reveal the engine with a supercharger on it. "This thing can be tuned just like the real thing." He grabs a tool kit and removes the belt and pulley from the supercharger. "This supercharger is required for the engine.  With it the truck makes an actual 150hp, without it the thing makes 50.  I am trying to get it to 175hp." He starts looking for a different belt and pulley.  He finds one that he thinks will help reach it.  He gets it bolted on and the belt in place.  He tweaks a few other pieces and parts then sets out to make another pull.