Getting a 2012 tundra 4x4 and looking for some performance upgrades that don't effect the warranty. I have a Volant, blistein front adj struts, rear blistein shocks, going to get the TRD sway bar, and getting a magnaflo muffler and dump it. The guys at toyota don't know anything. They claim if I have someone install the struts (which will give me 2" lift in the front) and shocks and something happens it voids the warranty. They said I can chip it and it doesn't void the warranty unless something happens. My question is, what is everything you can possibly due to upgrade power and off road ability without effecting the warranty. Appreciate your insight fellas.