a few do use that but in my expirience you can over loc the 3/8 valves on dump if you have the 1/2 on up if you run higher pressure it's pretty easy to set my ride hight using 1/2 to 1/2 in front you could just get some fittings to make it smaller or use like slowdown valves and adjust it cuz dropping slow gets old quik
but i put some air line running out of the dump slows it down a bit
but yes some guys do run 1/2 up and 3/8 drop it works for them but i just saying it can loc
My set up is 1.2" up and 3/8" down. If my car dropped any faster I wouldnt be able to set it at a good height. It must be the weight of the van or something but I wouldnt want any faster. Bigger is always better for lift tho cus its gotta lift the car up, dumps just gotta let gravity do the work.