Just to answer a couple - you can get a remap that will give you 220Hp, some remappers can also electronically delete the DPF (diesel particulate filter) and phisically remove it, or a complete stainless exhaust - all in one package (sometimes with a rolling road dyno before/ after)

With the DPF deleted it is one less thing to go wrong (they can give trouble/ go into regen cycles etc) it will still pass a 2013 UK MOT

They did a 170 2.2 which could be an option if you are remapping it anyway, i thonk that can be remapped to 220Hp abd may have more bottom end torque