Please help
 

Hi all,not sure if I am in the right place but I need some help

Recently installed z1 intakes and aam resonated test pipes, and I have fi non resonated exhaust. Ever since the instal, I get a very loud metal on metal noise coming from where the cats are it sounds like. I’ve removed all head shield except the ones on the headers, and I pulled on my exhaust and can’t get it to make contact with the w brace at all so am kind of at a loss of what else the rattle can be. Getting ready to just trade it in on another z I swear! Any ideas?