While VW’s 270-horsepower Golf R hatchback is hardly underpowered, the engineers over at the German tuning firm Siemoneit Racing felt like it could use some extra ponies.Siemoneit Racing calls its tuned VW Golf R the ‘Black Pearl’for obvious reasons- and it offers customers a choice of two performance packages. The first boosts the 2.0-liter turbocharged four-cylinder engine’s output from 270HP