I don't know about the EEC, but I think the DOT rules for the US specify 1500 lumens +/-10%. (both those numbers are from memory, and may be off, but you get the idea)
The +80% bulbs are doing two things at once: they go for the maximum allowable lumens (picking the +10% side rather than the -10% side), and they also use a smaller fillament to produce a better focus. The +80% number really only refers to the maximum improved brightness in a very small portion of the beam, hopefully the center hotspot that goes furthest down the road. There's a clear limit to how effective this can be, so you shouldn't expect anything better than a +90% bulb or so.
So, if your lights are generally too dim, you really have only two choices: replace your whole headlight assembly with an HID package, or add auxiliary (fog/driving) lights. Both of these paths will approximately double the amount of light you've got, though they differ in where that light is placed on the road.
You also might get a little extra benefit by putting in a relay wiring harness on your headlights, that can boost the voltage that reaches the lights and squeeze a little more brightness from them. But a voltage boost probably won't match the light gain from a whole extra set of lights.
If you go HID, make sure you replace the whole headlight assembly with one that's designed for HID, don't just use an aftermarket bulb replacement.