The Dealership would have to prove your resonator delete is what did the damage in order to not do warranty work for free and there is nothing the resonator does except keep the drone down so it can't break anything not having it. As for inspection you should be fine just check with a local shop and I don't know if you have emissions or not. Also you can get a O2 spacer so the check engine light won't come on with your downpipe. The tuners won't block the check engine light anymore because of FDA laws. I have a Catless downpipe resonator delete and Flowmaster Outlaw series axle back and I don't have a problem passing inspection because I know someone who will pass my car without a Cat and I don't have emissions in my County.
So the o2 spacer on amazon for about $10 would work? and ide be getting a catted downpipe, ik its not the greatest but its better then stock, less restrictive and still legal if i cant find no one to pass it without a cat. How does yours sound with what have done to it? I know when I put the outlaws on right after i got the car it sounded amazing compared to stock, people can hear me now lol.