Isnt that loba for the twincharged? I love that word! Bigger turbs - more lag made worse by being a small engine. Plus cooling problems. I have the tsi and for now im gonna use it for its intended purpose, looks, fuel, cheap (ish) insurance. There not the most widely modded engines especially against evry tdi and 2.0T. I could afford to buy a heavy lump of an engine but refuse to be ripped off by grabbing insurance companies.
Remap,induction,full exhaust system, lightweight parts? (carbon fibre/alluminium), hybrid turbo?(which i think involves rebuilding your current turbo???