Munich-based Tuner GeigerCars has a history of tuning Corvettes. Recently, they got their hands on a 2010 Corvette Grand Sport and like most tuners, felt that the 436-horsepower sports car was under powered. After all, why be satisfied with 436 hp when you get to 588 horsepower by adding a 2.3 liter supercharger? GeigerCars [...]