Well just an update. I ended up ordering injectors last year. And will probably install them this spring when i have time. I called eurocharged and they have a tune ready for those injectors so it should be an easy swap.
Since i last posted, i put a few more miles on the E55 fuel pump. One thing to note; its louder then the original pump, you can really hear it in the cabin.

The injectors FYI were Bosch EV14 550CC - 0280158117 a very popular injector for performance applications. And will require a power adaptor to fit the x-fire. I cant remember if they were EV6 to EV14?

Heres the thing im not impressed about. I bought the tune / 185 pulley from Jerry @ eurocharged many years ago, way before they have a location here in Canada. And part of the package was "free re-tunes" special promotion they had going on with the package. Now fast foward to today, i realize i would have to buy the remote programming kit for this scenario, i dont really want to drive down to the city with the upgraded injectors installed on the (stock injector) tune, and swapping injectors in the parking lot is not what i would want to do. So i gave them a ring, looking to order the remote tuning box, and for them to also send me the tune for the injectors to go with it... Low and behold they want me to pay for the tune file.
A bit of a rant, but dont try and **** off old time customers IMO. Hopefully it was just a misunderstanding.