We have a lot of good pieces for VAG cars with the TFSI engine. The TFSI engine is very easy to optimize and get a lot of power out of it without the huge cost. Ex. you can mount an Upgrade turbocharger from a Cupra which can deliver up to 350hp. If you do not want to change the turbocharger and are looking for easier tuning, you can replace the downpipe and the suction pipe together with an exhaust from eg Simons - and then a chip tuning. But read much more on our guide on tuning TFSI.
TFSI Guide - Tips and tricks for tuning the 1.8 / 2.0 TFSI engine.