Vehicle ran rich, now i know why

[Gravy]

Ok, need a quick, best guess by a few people on here.

Car normally comes with 360cc injectors, and recently, i decided to pick up a set of DSM 450 injectors. Well, today out of boredom, i pulled the part number on the injectors and found the following number: D1151BA

Google tells me they are 550 injectors, this explains my plugs being soot coated and having WAY too much water(smells like gas) coming from the exhaust with lots of black goodness. Going to be looking tomorrow, but about what should i be running the injectors % wise on the SAFC-II?

Going to bed, but i figure with all the minds on here, someone should be able to help me with this. Stock(oem) fuel pump at the moment and no FPR. Too late to do math right now.