I am sure you would agree with me when I say that the new Ferrari 458 Italia and Audi R8 V10 are remarkable exotic vehicles out of the box. For those who want the ultimate in performance, and beyond, they take cars like the 458 and R8 to the guys at Underground Racing. If you have any doubt about what exactly you will get out of Underground Racing’s customized twin turbo modifications, then check out the videos below of the Twin Turbo (1000+ HP) R8 V10 and (700+ HP) 458 Italia tearing up some asphalt.