Of coarse Nissan knows you are going to drive it like it was meant to be. However, what happens when you drive cars hard?? They break down much quicker. Nissan doesn't want to be taking care of the bill because of an idiot. If you were Nissan or a company, you would feel the same. It is like me selling a 1000rms sub to someone I know is going to running a 2000rms amp on it. That warranty will be voided because it is common sense that the sub will blow if they are running it turned up with twice the power. I am not paying for that replacement...if you want to do it, fine, but be prepared to buy another one.