Change to high quality filter lead to drastic drop in fuel efficiency

[lh59]

Here is the link to the stainless steel filter: http://www.hurricane-racing.com/filter-a.htm
Have to admit that I'm a bit heavy on the pedal when I switch over to the new filter . That period is over and I'm reverting to my fuel saving driving style. Hopefully the ECU will recognise my effort and maybe the FE will be better than ever.