So I finally got my 3" > 2.5" after cats exhaust installed and have left the cat temp sensors disconnected. My query is, what effect will this have on my tune etc? I have nistune. Ideally I would like to simply chop the sensors off at the base of the wires as they are currently just ziptied up so that they don't drag. I'm sure I'm not the only person to come across this when installing an aftermarket exhaust! Cheers, Adam