Your car is an animal, 418hp and still going! Hopefully you can sort out the fuel problem soon, sounds like you're on the right track with the boost tee.
As for the fuel pump, I believe you might be nearing it's limits. When I calculated my fuel needs at 100% duty cycle i got 3.8bar (55psi) flows about 230 LPH from the 044 pump and with 4x750cc injectors is 3 liters a minute or 180 LPH, which leaves me a good buffer. IIRC, you had 4x1000 injectors, 4 LPM or 240 LPH but the pump running at 3.5 bar can only supply around 237 LPH. Again, that's assuming 100% duty cycle but it looks like you may need more fuel in the future if you keep going.
Edit: That thought was half baked it seems, I just got back from Vegas so give me a break
I forgot to factor in the rising rate FPR, so here's a couple of quick numbers.
yours: initial fuel pressure 3.5 bar + 1.3 of added boost = 4.8 bar from the pump which is about 210 LPH and you need 237 LPH (again assuming 100% duty cycle)
mine: initial fuel pressure 3.8 bar + 1.7 of added boost = 5.5 bar from the pump which is about 175 LPH and I need 180 LPH (again assuming 100% duty cycle)
damn, I guess we will both need more fuel
