What do you suggest pressure wise?The GTI engine has the same capacity, number of cylinders and camshafts. Otherwise, it is very different. It has, for example a different turbocharger and , I believe, injectors. Tuning the TSI to 130 BHP is likely to be disappointing. I haven't yet heard of one that puts out less than 105 BHP stock at the wheels - more than 120 at the flywheel. They are silly quick but if you want it faster, spend the money on some better dampers instead and keep a close eye on the tyre pressures which make a big difference to its grip. Traction trumps power in an Up! 'cos they don't stick as well as some others I could mention.