Generally any warranty regarding the engine would be entirely thrown out the window if you tune it. Since basically everything requires tuning you are limited to what you can do. The catback basically covers it.

 

Modifying the tune on your vehicle can make the dealership deny a warranty claim. You just gotta choose modifications or warranty.

 

During my research I've read that saving the factory map and returning it to factory before taking the car in for service will uphold the warranty, is that BS?

 

Most mechanics aren't dumb and can see the history of the ECU and that it was flashed. Is there a chance they don't or don't care? Sure but thats a risk you're willing to take.

 

It's a 2011.... How much time is left on your warranty?

 

I know this does not answer your question in general but modifications alone cannot void a warranty. They have to prove and provide sufficient evidence that your modifications are what caused the issue you are claiming under warranty.

but I have to ask as a 2011what warranty exactly do you have? Are you in the United Statee? It could be different elsewhere.

 

You changed the vehicle to operate outside of it's design parameters.

You lose.

100%

The MM act as I mentioned before does not work that way, contrary to what people want to believe. The MM act says they can't deny engine failure claims because you used duralast brake pads. They can deny a claim because you used a k&n filter because it is outside of the designed parameters of a paper filter.

 

^ this. If you think they have to be mathematicians and show all their work or how they got to the conclusion you're in for a world of hurt. Bottom line if you modify your car you're running a greater risk of being denied warranty work. So if thats the goal and you have the money to put up if something goes wrong go for it.