[QUOTE=VNBT1;1737512]I tried that too, standard vn pump and standard fuel system/return lines but the fuel pressure wasnt constant, i even tried a BMW X5 external pump that has the fuel reg in it but it didnt help so with the prices of aftermarket fuel regs, pumps and surge tanks i decided to do a boot setup! It saves so much headaches/messing aroundQUOTE]
the only cause of inconsistant fuel pressure is the pressure reg on the back of the fuel rail. so if you had a problem with the fuel pressure not being constant than that was where the problem was.. nothing to do with the the standard system or pump.. you can flow as much fuel as you can to the rail but if the reg is faulty then it will give inconsistant pressures as it will be bleeding off too early.. a simple fix to that would be to have a separate reg on the return line or just buy a new reg