Recognized for their extreme tuning of Lamborghini and Ferrari supercars,
Underground Racing unveils the Audi R8 Twin Turbo. Equipped with a 5.2L V10,
this German sports car is able to produce 1000+ wheel horsepower with Underground Racing's twin turbo system.
Custom Twin-Turbo Systems that produce up to 1200 horsepower for Audi R8 V-10.
Audi R8 V10 Turbo Systems
Stage 1 Turbo System with Modified Engine
700 WHP on pump gas (93 octane)
1000 WHP on race fuel (VP-C16 117 octane)
R8 models at $39,000
Stage 2 Turbo System with Modified Engine
850 WHP on pump gas (93 octane)
1200 WHP on race fuel (VP-C16 117 octane)
R8 models at $69,000
Stage 3 Turbo System with Modified Engine
1000 WHP on pump gas (93 octane)
1200 WHP on race fuel (VP-C16 117 octane)R8 V10 models at $94,000
Race Version Turbo System with Highly Modified Engine
1000 WHP on pump gas (93 octane)
1500 WHP on race fuel (VP-C16 117 octane)R8 V10 models starting at $109,000
http://undergroundracing.com This post has been edited by ///M-POWER on 15 Sep 2011, 01:10
Underground Racing Twin Turbo R8 V10, USA-Virginia-Mclean 
