2005 Multi Strada 1000 Catalytic Converter Mod

Hi mate, i did that to my 2003 Multi a few years ago, i bought another secondhand cat unit first so that i had the original one to put back if it all went wrong. I used an industrial rotary slitter to cut the unit open next to the joining seam, then broke up the cat unit from inside, then had the two halves welded back together, it did make a slight difference to the sound, My multi had the Termi exhaust on it, it makes no change to power, contrary to popular belief there is little or no restriction in a catalytic converter. I still have the original cat unit from mine if you want to buy one !