i pulled my complete system, didnt touch the filter, but you may want to loosen the front headpipe, i couldnt quite get the rear pipe off till i loosened it up, it helped. good luck the connection at the front rear headpipe was a pain! shoot a little wd or something on it and lots of wiggling!!
2012 Cross Country(Imp blue)
de-badged,(self tinted) Klockwerx flare, passenger backrest, passenger touring floorboards, VictoryHID kit, Miller Mufflers short baffles,Lloyds air filter(from witchdr.)Lloyds timing wheel(6*), adjustable drop link, cut seat, removed cats, PCV w/at.
1978(2009) Honda cb750 chopper