It was the sound that made Blake Hinsey fall in love with motor racing. Blake first heard it when he was seventeen. He and his father traveled from their Dallas home to MotorSport Ranch, in Cresson, thirty miles southwest of Fort Worth. The roaring engines, screeching tires, and thunderous backfires created a wall of noise. “It was so raw and visceral,” Hinsey says. “That was the thing that made me go, ‘Maybe I could drive one of those one day.’ ”Hinsey’s dream of being a driver was short-lived. Instead, he became fascinated by the engineering behind the cars, the tiny adjustments that make them go faster. Hinsey’s interest grew into an obsession, which he followed first to a mechanical engineering degree at the University of Texas at…