German tuner OK-Chiptuning has revealed its latest project based on the Audi TT RS Plus. With the installation of a Wagner Evo 2 charge air cooler, optimized ECU and new DK-Turbotechnic Dortmund exhaust system with valve control, the 2.5-liter turbocharged five-pot engine is boosted from 360 hp and 343 lb-ft of torque to 453 hp and 486 lb-ft. Other mods include an H&R sports chassis, a set of 19-inch OZ Ultrealeggera HTL alloys and black coated carbon-fiber rear wings and front/rear aprons.