A remap will make the world of difference to be honest. I have a mild map on my 2008 CAPA and it made 280BHP and 616NM. If everything is spot on, these will make 330BHP and 700NM with everything else standard. Above this, you're into the realms of hybrid turbos and upgraded fuel pumps. The CAPA and CCWA 3.0TDIs are very strong engines. If you're considering a remap, please make sure you go to a reputable tuner with a rolling road who will do a custom map and not a chap with a laptop and a generic flash map. It's obviously more expensive, but the benefits are rather substantial.