Replacement RRFPR for DASC

[johna]

My mechanic says I need a replacement adjustable fuel pressure regulator for my DASC equipped 318is (M44).

There are quite a few different adjustable fuel pressure regulators on eBay but I'm not sure if any of these are suitable.

I understand I need a FMU, not a FPR. These come in various ratios, or fully adjustable.

Does anyone know the ratio of the original unit?

Or has anyone got any suggestions for a replacement regulator and how to adjust?

NB. I am in Australia