I run good pressure with standard pump in several TFSI
110bar standard - I am 122bar (since March 2013) without problem. Most cars I run 117-120bar without issue, and I hear of some pushing 130bar but I wouldn't do this personally with stock component. But people are doing it.
You can increase power without touching rail pressure (mid RPM), but BWA is a must! Do not want 'lean' engine!
I hear some pumps used to fail (maybe Autotech or KMD), so best option is pressure tested as mentioned above