I have a stock 2TGEU with original ECU (I'm lead to believe). And i get around 10L/100km.
On long trips (Frankston - Mt Hotham) it will drop down to 8-9L/100km, but sofar I'm yet to get over 11L/100km. And that includes HARD driving (eg: celica club cruise days).
I'd expect the fuel econ to be marginally better with the EFI on the older engines.