My replies taken from same thread subject at HCP, pasensiya na 2 finger typist ako...

"My take has always been the same since nauso yang ram air na yan, it's the same as the author of the article.

There are many variables in designing an intake system, length of intake, diameter of intake, shape of the intake, even the surface finish of an intake has an effect.

Just because a gain was felt when a ram air intake was used doesn't neccessarily mean the ram air effect is responsible for the gain.
It's more due to the other factors, rather than ram air effect."

Seperate reply.....

"Re "cold air".

It's not actually cold but ambient temperature.

We tested the difference in the intake temp of an EK airbox using a drop in K&N filter taking air from relatively(water trap was removed) stock location & a remote air source(air ducted in from the area in front of the front right wheel, same vehicle same drop in K&N air filter, same weather conditions).

There was a 20' Centigrade temperature difference.

Engine bay sourced intake air was in the 50+ C, while remote intake was in the 30+s C.
The 20's C difference is significant enough to affect power output by a few horses."

And a reply from someone whose view re auto tuning is always valuable....

"KHRIS TAN
My take on this subject.

There is indeed ram air but the position we usually use is not right. Extensive wind tunnel testing is needed to find the right pressure point where the air entryi should be located. Usually the best entry point for RAM air is in the winshield area. Kinda hard and expensive to install it in an ordinary car. STupid also if you just gain a few ponies for ridiculous amounts of money. But if your looking for an advantage especially in NASCAR and BTCC where almost everyone has the same power then you'd do it no matter cost is.

In Honda's where the RAM air is installed in the headlight, My research showed that it helps at lower speeds but at high speeds it will actually hurt performance.

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yebo,
Ikasa mo pre' , appear! More or less yun na yun.

Ipost ko yung sagot mo dun sa HCP ha? Tyvm.

To add,
High air velocity(airflow) isn't neccessarily high pressure air.