My "pit" is a ceramic Primo Oval XL and I'm using a just printed MicroDamper. I decided to try a test of 4 temperatures (200, 225, 275, 350) to see how the system behaved. PID settings were 4, 0.004, 5. Min fan 0% max fan 80%. No fan at 15%.
I'm really impressed, basically blown away.
Here...