Engine flooded-empty tank to full tank?

Optimiser

Hi All,
I have the stock Stillen SC kit which has been reliable so far.
I recently let the fuel tank empty to the point that the indicated driving range was "****" and 1 dot was left on the gauge. I have done this a few times before and never had fuel starvation, even at the track.
I filled the tank to the absolute brim where you could see the fuel right up to nearly the opening of the fill pipe, 67 and a bit litres of fuel!
When I started the car it wouldn't idle properly, coughed and spluttered till it stopped and I had to restart about 4 times and then I had to keep the revs up using the accelerator pedal or it would cut out. I think it was flooding as an unusual amount of unburnt vapour came out of the exhaust.
Once I finally got going on the road after leaving the petrol station it sorted its self out and started idling normally again when at a stop.
Could the very empty to very full state of the fuel tank have upset the ECU, fuel system or something?