I guess you could fit an EDM or similar fuel flow meter but doubt if it has an STC in this Country?
I had an EDM700 on my Robin Regent but failed uphill in getting the fuel flow transducer approved, so had to live with just the 'Lean Find' facility ( a fixed wing luxury only...!!) and the 'Fill?' legend every time I put the Master on. AFAIAA the transducer is still in its box - never fitted by the current owner.
I guess that tells you something.
Throwing loads of money at it might work.
By way of example, you cant even fit the additional avionics mounting bar to the right of the R44 console here AFAIAA.
Best
HP