The 2012 Audi RS3 Sportback might look the part of a ’ho-hum’ car on the outside, but rest assured, it’s got some serious horses lurking waiting to be bumped up by the right tuning house. Fortunately, German tuner B&B is up to the task, offering not one, not two, not even three, but four stages of performance upgrades for the RS3.

The first Stage upgrade takes the RS3’s 2.5-liter turbocharged, five-cylinder engine’s standard output of 340 horsepower and 332 lb/ft of torque up to 410 horsepower and 413 lb/ft of torque. Not content with that? Well, B&B has the Stage 2 upgrade for you, further bumping up the output to 425 horsepower and 428 lb/ft of torque. Then there’s the Stage 3 upgrade that boosts up the output further, hitting 450 horsepower and 442 lb/ft of torque.

You would think that those upgrades are already enough, but B&B is far from finished. For the price of ?15,950 - that’s about $23,000 based on current exchange rates - the German tuner will provide a larger turbocharger and a high-performance stainless-steel exhaust system that brings the RS3’s total output to a mighty impressive 510 horsepower and 501 lb/ft of torque. With this upgrade, the RS3 can now hit north-to-60 in just 3.5 seconds with a top speed of 193 mph.[...]