I don't know the SR22 fuel system but don't Continental engines have a bypass back to the tank?
If the engine delivers the book performance and runs fine then that suggests the indicated fuel flow is wrong.
But it would suprise me to find a plane whose flow indication includes the bypassed figure. It would be slightly useless, especially if the indicator is derived from a fuel totaliser (a turbine flowmeter) whose accuracy is normally about 1%.
But then I have no idea how the totaliser makers deal with engines that have a bypass, apart from installing the transducer after the pumps.
POH calls for first 30 mins of cruise flight with pump on
I wonder why?