hi my name is gabriel i own a IS300 02 with a 1jz VVTi ... i did the swap and i sent the car to get the wiring for the engine done. well after a month of having my car in the shop the mechanic is telling me that i'm missin a computer.. i was like (a computer???????) so i asked him which one?? and he said the "Transmission control computer".... can some one please point me to the right direction im kind of lost here 'cause i thought i only needed the japanese computer and the american computer to make my car work... now! the car starts, runs and reverse works but it wont shift or when you put it in drive it comes out in 3 gear.. please i need some help here.. thanks in advance