Originally Posted by hdwindex
you see one of main reasons why i considered a funnel was that i felt with a vortex the flow was restricted a bit. and since i just got a km i wanted to see its full potential of how eassy it is to pull. atm wiht my old vortex seemed pretty much the same as my havana hookah with razan hose.
A funnel will have a more open draw so long as the foil does not get pulled down over the spire. This should not be a problem so long as the foil is tight and it is lessened further if using heavy duty foil.