The only way I can think of to see what your FMU is set at is to dial in your static fuel pressure(with the vac off), and then run it to a given boost level and then extrapolate the FMU ratio from. To do this you would need an FP gauge mounted in the cabin though, unless you can spool your turbo in neutral(which you might be able to, since the TD04 is pretty small). If you can spool in neutral, set your static FP to say 40psi, and then spool to full boost and take the FP reading. Let's say you get 80psi of fuel pressure under boost. Take 80 and subtract 40(static FP) and you get 40. Take 40 and divide by 4.5(your boost level) and you get 8.88, which means your FMU ratio is 8.88:1 at that setting.

If you have a 12:1 FMU and run 7lbs of boost, your FP under full boost should be around 124psi, assuming a static FP of 40(12 x 7 + 40 = 124.

Again, let me stress that for any FMU setup in which fuel pressure rises to anything over 60psi, you need an inline pump. Intank pumps can flow large volumes, but can't produce high pressures.