What can i boost at w/ 255 fuel pump and a HKS FCD?

[BOOstGhost]

i was just wondering what you guyz think i can boost at with the HKS FCD a Walbro 255 Fuel Pump i also have a turbo back with a new cyclone motor just dropped in my 92 AWD?? i have no clue what would be safe. thanx for the help

 

[TSIfreek]

15 PSI is safe and what I run on my 14b with a stock car besides a air filter and 255lph pump. It also depends on your intercooler you run. If you have a stock sidemount stay under 16 psi on the street. Takes deep pockets to turn up the boost in these cars reliably.