Looking at the air flow, velocity, pressure, and aerodynamics, without knowing what the air flow will be at your scoop, there actually may be a low pressure area at the opening?
You are correct on that as well.
I am no aerodynamics engineer
but I had a 4" sucking hole in my fender and thought might as well toss a scoop on there till I get around to making a snorkel. It seemed like a gained a wie bit more power at higher speeds but maybe it was a placebo effect and i didn't gain anything
Ill say I'm 80% sure I gained some kind of power over the "stock" weber air cleaner.
One, re-gear to move your peak torque RPM in the MPH range you drive mostly... to move the peak torque numbers to the RPM range you drive mostly at freeway speeds. Either way it's not inexpensive, but should work very effectively.
I did blow out my stock 4.10 gears shortly after i did the scoop (390k miles I guess those tend to go with unknown PO maintenance)
Found not one but two stock toyota 4.88s out of 4 runners in 1 week
so got that gear jazz covered for now.
