their own custom stuff... question though.. how would indv. tb's help on a turbo car? I can somewhat see how they would help on a na car although I still kinda don't understand how they help unless you leave the tb open and don't have any intake piping
a random noob once said: "I think its great that I can make a civilized post among you greater life forms and get my breasts ripped off by savage milk craving z people."