Has anyone experienced brake fade on a D1? Maybe in the mountains. I guess I just don't see the D1 ever coming close to needing vent gasses away from the brake pad lol. I'm sure everyone will jump on my shit but I don't care. If you want to stop better, play with your pad compounds. Unless you're out on the track threshold braking your D1, Drilled and Slotted rotors along with ducting is literally the last thing you'd need to do for braking performance. And if you are out there on the track with your D1, you're in last place with the 4 liter.
With my D1, I've noticed that on the high way, if I have to lay into the brakes hard, If I progressively lay into the brakes harder and harder the truck stops better and better as the pads heat up. I've actually become quite confident in the stock brakes and how it stops. The more I use all of the brake, the more they heat up and the better they work.