Here's how I see it:
I could choose to listen to physics nerds as they give me 110 text-book reasons NOT to buy them, and leave my car stock so that it is forced to breathe through two 1" oval openings.
OR
I could follow the lead of the men and women that own the fastest cars on this forum.
All of them have switched to bigger intakes. Most of them have intakes routed outside the engine bay. Many additionally have the intakes routed as far forward as possible.
Instead of the arm-chair physicists giving me hypothetical numbers from airplances, textbooks, etc... we need to figure out how many CFM the intake sucks in at ~2,000 RPM, 4,000 RPM and redline.
We then need to calculate the CFM and circumference together to approximate a figure for the velocity of the air traveling through the tube.
Once we've figured out the rate of the air exiting the back of the "scoop" we can then figure out how much more beneficial it would be if there was a constant supply of fresh, cool air buffeting the front of the scoop. At ALL rpms.
The people always crowing about mods being useless are the same people that DON'T mod their cars for performance. So, in essence, performance mods WOULD be useless because those types of mods necessitate performance drivers. Yep, I said it.
If saving every penny in the name of practicality was the name of the game, none of us should own this car. A Honda can get us to work.
But, in a car with $100 oil-changes and caviar-taste when it comes to service, a ~$110 intake mod shouldn't break your bank or your conscience.
The devil-horns are on my short-list of things to buy. Why? Because I want my car to be drawing cool, clean air from as far in front of the smoldering-hot engine as possible. They smoothe the air flow out, and move the intake point out to the coolest area possible, gulping all the air they can jettison out the back.
The alternative is a squished, oblong opening flanking each side of a 180-degree radiator.
Call me crazy, but that's an effective mod. Regardless of what the Canadian research says.
