supra twin turbo 2ltr jap inport.

[wilko]

hey guys, just bought a white 2ltr twin turbo auto
just woundering what mods are best to buy first to up the brake horse power

also on the car there is a ecu control unit.but i have no idea what it does. theres a little turning thing on it. i have traced the wiring to another box which is under the passenger glove box, on this it say compertition ecu. on the turining thing 1 way it says max and the other it says min...any help is v. welcome

thanks alot.