I've been running the filter for a while , but been doing some heavy offroad driving and bigger trips and for that I removed the filter , as I was still a little worried of water and mud getting through ...

DNA confirmed (I spoke with them on telephone) that they had the idea to make a cover for this filter , but this would mean the same as driving with a standard side box closed ...
meaning a filter that you close when things get wild (water crossing), and later on you just open up for the rest of the ride ...

So they still haven't produced this since they are not sure there is interest enough for this temporary solution.

When I put the key mod at around 8-9 , the bike really pulls a lot better , also when driving on the highway at around 110-120 km/h the bike runs much smoother and listens much better to throttle opening ...

oh and the sound ! very very nice

I never worried that the bike was running to lean , the only thing I checked was my spark plug , and that look the same as before , so I always think it's running fine ! , and probably it is !