Actually the recommended temp for shut down is 300 degrees, if you have just been running her hard this can take a couple minutes. I got tired of waiting in the truck for cool down while the wife runs into the store so I installed a Brite Box Turbo Lifesaver and I love it. I can set it for extended run times out to 150 min, it also has a small kill switch that I have hidden for when I go into the city. If I let mine idle it will cool down to 275, usually I am down to 300 or below within 1 min. Good thing these things use very little fuel at idle, and wetstacking is not an issue with out trucks due to the cold temp pkg. If you don't want to sit there I suggest getting a turbo timer. BTW. If somebody did try and steal it as soon as they hit the brake pedal (which they need to do to put it in gear) the truck cuts off right away and can't be started.