if i manage to keep within my budget when buying an S4 2.7 biturbo, i should have between £1500 and £2000 to spend on engine modifications. i would like to know what you guys would recommend?
turbo engines are new to me and this will be my first. i am coming from a peugeot xu10j4 and xu10j4rs background.
i have tried to do a search and to find out some more info before posting this but because im new to this forum im not really clue'd up on what to search for.
any positive help will be appreciated.