Dyno Tested IS200t intake
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Joined: Nov 2018
Posts: 628
Likes: 184
From: OK
I suppose the entire hood could be removed. 
I still find the results of the dyno tests to be interesting. I guess if all tests were done with the hood open it's fine as long as ambient air temps were considered. I was actually surprised to see that it's a fairly divided topic on the internet... some prefer to do the test with the hood closed, while others do not. I think that it's probably advantageous for an open-air cone intake as well.
As for the intake itself, I won't knock it as an intake that creates a meaningful power gain is uncommon. What I question is how the intake alone managed to shift the whole powerband up in the RPMs like that. I would have expected a more subtle change. Any idea how that works?
I still find the results of the dyno tests to be interesting. I guess if all tests were done with the hood open it's fine as long as ambient air temps were considered. I was actually surprised to see that it's a fairly divided topic on the internet... some prefer to do the test with the hood closed, while others do not. I think that it's probably advantageous for an open-air cone intake as well.
As for the intake itself, I won't knock it as an intake that creates a meaningful power gain is uncommon. What I question is how the intake alone managed to shift the whole powerband up in the RPMs like that. I would have expected a more subtle change. Any idea how that works?
The results are interesting, but as that McLaren guy pointed out - it is actually extremely difficult to get the correct WHP reading. Basically, you need support from the manufacturer to calibrate it and put the car in a certain mode, which is usually impossible to do. So, this is why when different dynos are used, they give different results for the same car. Basically, a bunch of assumptions made in the dark. The ballpark figure is correct, and comparing it against the same car on the same dyno is correct, but making absolute measurements (aka getting actual whp reading) is hard.
Problem here is that when you open the hood, the closed stock airbox does not get any more air, but the "CAI" will get more cooler air because the hot air does not get trapped by the hood anymore. In addition, the internal bay volume stays "external" and filter will have less problems finding more air. Trouble is - it is not how that CAI would operate on the road.
This alone (without t and p considerations) is a serious threat to the measurements validity.
Personally I dont care if the stock airbox or CAI wins in a fair "fight". I only care that that comparison is made fairly.
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Joined: Aug 2020
Posts: 301
Likes: 159
From: TX
Yeah, the hood would get removed automatically by the airflow. It is a built-in feature of aerodynamic tunnels
The results are interesting, but as that McLaren guy pointed out - it is actually extremely difficult to get the correct WHP reading. Basically, you need support from the manufacturer to calibrate it and put the car in a certain mode, which is usually impossible to do. So, this is why when different dynos are used, they give different results for the same car. Basically, a bunch of assumptions made in the dark. The ballpark figure is correct, and comparing it against the same car on the same dyno is correct, but making absolute measurements (aka getting actual whp reading) is hard.
Problem here is that when you open the hood, the closed stock airbox does not get any more air, but the "CAI" will get more cooler air because the hot air does not get trapped by the hood anymore. In addition, the internal bay volume stays "external" and filter will have less problems finding more air. Trouble is - it is not how that CAI would operate on the road.
This alone (without t and p considerations) is a serious threat to the measurements validity.
Personally I dont care if the stock airbox or CAI wins in a fair "fight". I only care that that comparison is made fairly.
The results are interesting, but as that McLaren guy pointed out - it is actually extremely difficult to get the correct WHP reading. Basically, you need support from the manufacturer to calibrate it and put the car in a certain mode, which is usually impossible to do. So, this is why when different dynos are used, they give different results for the same car. Basically, a bunch of assumptions made in the dark. The ballpark figure is correct, and comparing it against the same car on the same dyno is correct, but making absolute measurements (aka getting actual whp reading) is hard.
Problem here is that when you open the hood, the closed stock airbox does not get any more air, but the "CAI" will get more cooler air because the hot air does not get trapped by the hood anymore. In addition, the internal bay volume stays "external" and filter will have less problems finding more air. Trouble is - it is not how that CAI would operate on the road.
This alone (without t and p considerations) is a serious threat to the measurements validity.
Personally I dont care if the stock airbox or CAI wins in a fair "fight". I only care that that comparison is made fairly.
Advanced
Joined: Nov 2018
Posts: 628
Likes: 184
From: OK
I get what you’re saying about making super accurate measurements. But considering that’s a lot of tech that most people don’t have access to, it’s a bit unfair to use that to argue against someone else. We mostly agree that the OP can do better to get accurate measurements, but saying that unless someone goes to Ferrari to test their CAI then their data is useless is also not helpful.
Intermediate
Joined: May 2016
Posts: 416
Likes: 176
From: Texas
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