Makes

Hi Guys I recently bought a 2012 pathfinder Se model. I took it for a desert drive yesterday and saw that I might have issues with front bumper. I would like to give it a 2 inch lift or change bumper. I gave Nissan a call and they could not give me a answer if my warranty would be affected if I did either one of changes mentioned above. Does anyone have any knowledge in this regard or know who I could speak to. I don't wanna do any heavy desert driving with it, just to take family on easy drives not wanting to worry about bumper all the time. Thanks for your help. Regards Makes