get a k&n filter cut the bottom out cut a matchin hole in your airbox there only plastic i used a wood drill an a rough round file lose the snorkell if yu think the filter is lettin air in around top an bottom put some door sticky draught excuder around the top an bottom.dont think yu need mesh.be careful when drillin bottom of filter yu dont shoot through an damage the filter!!i havent removed the ai yet!as i havent noticed any blueing yet!it does pop a bit on the decel but i quite like it sounds like a real racer!!
