Here are some vids for those that might be interested.
1) Cat delete pipes with stock Npp
https://youtube.com/shorts/hJwkLjtZvt4?feature=share
2) CA delete pipes with Flowmaster NPP
https://youtu.be/yM3TfAVCaP8
3) CA delete pipes with Borla Resonated X and Corsa NPP
https://youtu.be/SNWc8mF1O0Y