The velocity of any intoxicant entering your body is substantial to the amount of actual high. Do a shot really fast and drink it over the course of a minute, and you get completely different results. Same with THC.

It is most likely that as you hit it you get a good smoke to air ratio. This is incredibly compressed as you get higher airflow that is hotter. Hot air dances around liek crazy, as does anything in it. So you get the smoke moving more in your lungs as well.

The blood vessels on the... air sacs (what is the word?) in your lungs are having all this put on them so you get much more THC from your grass. So it's not making it more powerful. It's just bringing out the full capability of your weed.

Which is why gravity/waterfall bongs get you so incredibly high. The air is more compressed and such.

I also believe that the colder the air is to start with, the better the hits are. I get much higher in cold weather. So do all of my friends. Can be the same stash, but it just seems to work that way.

So we're kinda applying engine intake principles here. Lots of air, but still enough smoke in the hit to keep you happy. The little ball-screen you made is most likely contributing much to your great pipe. Lots of air gets around the bud and cherry.

Sorry I'm rambling. But anyhow, yeah.

Enjoy.

--mic