Alot of people told me to run it with the hose off, but when that happens my PSI stays the same while at WOT. But with it on at WOT the PSI goes up about 4-6 PSI, which is better more fule at higher RPM. so why run with hose off? anyone?

 

um more pressure=better
the more pressure in the rail the more fuel that goes into the combustion chamber.