Realtime racing prepares a factory TSX to compete in the SCCA Pro Racing World Challenge GTS class. The factory TSX is refashioned to be stiffer and lighter, and includes motor work with raised compression, and a custom built sequential transmission. Acura won the Manufacturer's Championship for the Touring class in 2005 with the RTR TSX, as well as the Driver's Championship for Peter Cunningham. Acura returned in 2006 and won the Manufacturers' Championship of the Speed World Challenge Touring Car class for the second year in a row, running both RSXs and TSXs. TSX drivers finished in 3rd and 4th in the Drivers' Championship. More success followed as Pierre Kleinubing won the Championship in 2007, and Peter Cunningham took it in 2008. Driving for RTR in 2009 is Peter Cunningham, Pierre Kleinubing, Toby Grahovic, Kuno Wittmer, and Jeff Courtney.
