if the money allows i would just upgrade now. that way you will have room to grow. you change one thing and you will be at the limit if not very close.
I read,from your writing,that you would like to use what you have if you can. You can and I would if I were you. The points that Boost231 makes are valid and true. If you are more concerned about cost now and whether or not you can do what you want with what you now have,I give you the green light. You'll be near the limit of these injectors,only,if you run up to 21lbs of boost. Your O2s and spark retard will tell you where you are and how high you can go. If,after making a richer fuel adjustment in the chip,you don't see a corresponding increase in richness from the O2 sensor,you can raise the base fuel pressure. You're going to want to see an O2 number of 835 when you first go WOT. Then it will fall the longer you stay in it.
