Import Tuner Challenge
Import Tuner Challenge is set on the Shuto Expressways in Tokyo, Japan. There are a total of 415 rivals in the game. As in many other TXR games, there is the C1 and the Shinkanjo, but unlike TXR3, Import Tuner Challenge lacks the Nagoya, Osaka and Yokohama highways. Instead, there are two new highway sections in Tokyo: the Rt.3 Shibuya and the Rt.4 Shinjuku.
Story
After defeating the 13 Devils again at Kaido Circuit, Motoya Iwasaki, also known as Speed King, suddenly disappeared without a trace. Since then, many riders from all over Japan come to Tokyo to compete for his title as "Speed King". The hero here is Iwasaki's best friend and defeats Bloodhound, Midnight Cinderella, Platinium Prince, Skull Bullets Gang and finally Phantom 9. Meanwhile, Bloodhound reveals to the racer why Iwasaki has been depressed for a long time: his girlfriend died because she was sick and Iwasaki was not there to support her.