hi all, havnt been around much as i have relocated to southampton for uni! i have a 2000 a4 qts (180hp) with what i understand to be a k03s turbo. the turbo is failing and leaking oil according to garrage, no power..., much slower car all in all. so i need a new turbo. what i wanted to ask is: if i was to go for a K04-015 and get it fitted, would it: A) work without ECU upgrade, even if it ran at 180-90hp?? or power band /torque diffrences?? or would it NEED an upgrade to work? B) Be a direct fit? i dont really care about increasing the power on a huge scale, but some small gains past 180 would be nice! at the moment its just not a good driving experience! any adivce would be really appreciated as there is so much info out there and im getting so confuised with reading conflicting information. also would anyone know a good supplier to get an original borg warner k04-015 on a tight budget? i really dont have the money to go down the "G" route either! thanks for any help guys!