yeah, you're right...I didn't word that correctly...but, wouldn't more flow also produce a smoother, easier arc of the wheel? Of course, I have never modded a box or pump.... 
If your problem is the pump can't keep up with how fast you turn the wheels, then yes it may help. This is caused by the fluid being restricted and not folwing fast enough. It is most likely a safety feature, but no good for working the wheels back and fourth in the mud.
