filter/exhaust/remap at REVOTEKNIK. You'll be pushing 270bhp at that. Wanting more then move on to one of the tuning packages at Awesome GTi. Get a decent clutch.

Awesome GTi and the like have various low compression big turbo packages for around 4-5k that will push you to 350bhp +. The cupra already runs similar clobber to TT-225, so you would be best looking to the aftermarket for tuning options rather than other VAG models.

Dangerous Dave