Volkswagen's uber-Golf, the GTI Clubsport S, is as hot as they come, but ABT believes that it can become more interesting with a new bundle of upgrades. 

Created in-house and aimed at the vehicle that shattered the Nurburgring record for FWD cars last year, the specially developed control unit and matching software can bring the total output to 370 PS (365 HP) and 460 Nm (339 lb-ft) of torque. 

This means that the VW Golf GTI Clubsport S is 60 PS (59 HP) and 80 Nm (59 lb-ft) of torque more powerful than the stock version, and it's capable of improving the acceleration numbers, although the tuner doesn’t say by how much. Top speed has slightly increased, though, from 265 km/h (165 mph), to 268 km/h (167 mph).