OBD11 Fuel Rail Pressure Gauge Request

I know this is an odd one, but Im looking for some help from a fellow VRS owner who has ideally the 245 engine with GPF. I have had a noisy fuel pump issue and just recently the idle is hunting occasionally. Now I know what youre thinking but I cant get to the dealer as its now 70 miles away and Im reluctant to go without either a fault code or  some evidence.

I have noticed on the OBD11 'Gauges' section (fuel rail pressure) that when my car cuts out on stop start, the noisy fuel pump continues to build pressure very slowly, but obviously when on throttle it picks up very quickly. Im looking for a helpful owner with OBD to see what sort of figures they get in Kpa during normal idle when warm and when stop/start activates to compare with my own. I'm going to use this to bolster my argument with the dealer if it is abnormal.

Can anyone offer any help please?