If you don't know what an Abarth is and what it does to your regular Fiat 500, you might want to look away, because this isn't really about city cars and TwinAir engines.

UK specialist tuners Superchips have taken to giving customers of the Abarth 500 what they really want: more bang for the buck. To put it simply, for GBP455, you too can add 22 bhp to the existing 133 bhp of your regular Abarth 500, bringing it face to face with the output of the Esseesse version.

Superchips dyno testing ... [...]

Source: autoevolution