I just put a kinetix intake manifold on my 2003 nissan 350z... I was told that it is good to let them break in for my computer for about 500-1000 miles is this true??? THanks

 

disconnect negative battery terminal, pump break, reconnect terminal. Then throw the break-in period out the window. Probably would take 500miles for your computer to adjust, but doing that will reset your computer and make it adjustment immediatly. Drive it like you stole it. Enjoy.