I bought My last ISF used and it already had 2nd cat deletes... and I had no issues at the dealership prolly bc I had no claims for engine or exhaust issues. I want to do this on my new ISF. Does this void any warranty if I make an Engine/Exhaust claim????

 

If you use the search tool, youll find answers to all 3 threads you just created. But the answer is no. If something goes wrong with your exhaust then they can blame it on that. But no.

 

It will void the emissions warranty because it is illegal to remove a working catalytic converter from a car in all 50 states by Federal law.

Other than that, you've nothing to worry about.