WOW! You put alot of thought into that set up. Prob the cleanest DIY snorkel I have seen. Rep points! I might have to do this...
That's a good point... the corrugated pipe would catch any water in there.. didn't think of that.i highly doubt that the flex tube is restricting it that much. especially considering that rubber flex pipe used from your airbox to your throttle body is more of the same kind of rippled tube AND its a good 3/4" smaller in diameter. if you were to not even consider the ripples, the open diameter that allows free airflow is still a greater opening than the original airbox. With the cone filter, airbox and new up tube i think i have opened up airflow more than the original set up. And thats without the ram air effect of the snorkel head.
And yes, i did think about this for a while before i ended up using the pipe. I figured that since i lost the rubber hose that would allow me to use the metal pipe i originally had intended, even if i did managed to get rain water in the intake that corrugated tubing would provide some stopping effect to rain water coming down the intake. This is why i decided to stick with this tubing.
and that sound im hearing is definitely coming from the LARGE amount of air its sucking in, not the lack of it.