hi guys just to let you know i cut open my old particulate filter to see if it could be cleaned and reused to my surprise yes you can cut it around weld theres 2 filters in there put high presure cleaner as close as you can and watch the soot fly out , there is a lot but done both of them and now perfect ready to weld back together and put back on a car should work a treat and save a lot of money give it a go cheers