ive kept hold of my cat, for the mot, but my question was more of removing the middle box... would that cause any damage, as long as the cats left in, plus i have a straight thru back box rather then an actual box with an exit, but havee a peco powermaster sat in my room 4 spares...

What panel filter do yuo recommend.. im currently using a K&N57i cone.....maybe soon to be changed...