At the NITTO booth at SEMA 2012, we spotted this Underground Racing Twin-Turbo Audi R8 GT. The German sports car received technical as well as exterior upgrades and the result is visible in the gallery below.

The headline figures are 1,000hp at the wheel on standard pump gas and 1,250hp at the wheel running racing gas. Those figures take into account losses through the transmission and the differential which means that 1,000hp is the figure that this car puts onto the road. The engine features a MoTeC boost-by-gear system and a few other parts.

The Twin-Turbo Audi R8 GT rolls on HRE wheels with fourteen matte black spokes and carbon fiber lip. The exterior color was changed using a matte red wrap.

[Photos by Effspot Photography]

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