13 f350 DRW
Staying between 8 - 9 K on rear axles pretty regularly.
What do you have? Easy to install? Manual and compressor fitting?
We put the firestone kit on my dad's truck. Currently it's all manual, but only because we haven't hooked up the compressor and controller yet(we were in a hurry when we did it). I advise compressor over manual.
The other day it wasn't raining when we left home, 30psi in the bags was almost perfect, pulled like a dream. But 2 hours later after it started raining and wind picked up.......we had to pull over to let some air out, it needed more tongue weight. If we had the on board controller hooked up, we wouldn't have needed to stop.