I'm just curious as if the angled o2 bungs on the hahn catted DP are the same as the angle of the catless ones. Basically I just want to know if I hollow out the cat on my Hahn catted that has never thrown a code in 10k miles am I going to end up throwng a code?

 

They should be the same. Chances are you will get a CEL, but I have seen plenty untuned cars with a catless DP that have not had that issue. It's honestly not worth the effort though IMO. Either way HP Tuners could easily disable the code for you if you are worried about it and decide to go through with it.