My last fuel strip fitted just under a year ago has always been a bit erratic..
Shows full when I fi it up. Goes down as it should for the first 100 miles or so.
Then drops to about half full with a range of around 175 miles for the next 100 miles or so. Then counts down to about 15 miles range left. If I fill up then I can only get a out 30-31 litres in, so still have 5 litres or so in the tank.
At least I don't have the flashing orange light on all the time.
I'm hoping it'll fail again before the warranty runs out and the will fit the upgraded one and calibrate it better.
I was told it'll take a few tanks to sort itself out but it's been like this since it was fitted.