I've just done mine too - I was a bit dubious about this at first as someone went to a lot of trouble to design that filter with all the little cut outs in the black and also I drive around here with no street lighting so I ldon't like the instruments to be too bright and distracting. However, if you exercise moderate care taking the filter out, the whole thing is reversible and it only took me 20 minutes taking it steadily (wheel left in - I just wiggled the cowl around it). The results in a blacked-out garage seem really good....the lighting is more even over the instruments than before especially the water temperature and fuel guage which previously always looked dim against the 2 bigger instruments. There is still plenty of 'dimming' left in the rheostat. So a 'free' upgrade. Thanks to everyone who has posted on this.
Richard
PS added an 'after' photo with the rheostat mostly down and the camera at -2 .0 EV and with the white balance adjusted for the lights.....this looks pretty close to what I'm seeing.
1.8i Mk2 Solar Red, 16 inch square spoke wheels, MGFMania hood with zip-in glass rear window, DRLs, Kmaps ECU, Pipercross panel air filter, MGOC Supersports back box & some cockpit bling