Dynoed Intake: open hood vs close hood
May 8, 2006, 11:58 AM
#1
Dynoed Intake: open hood vs close hood
Car is a 2005 Evo 8. All runs was done with a big fan in front of the hood, temp at around 60 degree.
1st run: Hood open
2nd run: w/o resting the car, just closed the hood.
3rd run: 10 minutes rest.
1st run: Hood open
2nd run: w/o resting the car, just closed the hood.
3rd run: 10 minutes rest.
Last edited by Jhero23; May 8, 2006 at 12:08 PM.
May 8, 2006, 12:25 PM
#7
Originally Posted by SLVROZ_03
Do like some Civics I've seen a put spacers in the hood bracket to allow a gap and allow more air inflow...
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May 8, 2006, 05:06 PM
#9
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Wow, the only smart one here. Well, the OP too. This debate has been going on forever and everyone in this thread missed the point! Glad to see someone actually tested it, and now we see that all the theories were true. Good post.
May 8, 2006, 05:10 PM
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Originally Posted by Warrtalon
The point is that gains seen from an intake on the dyno are not 100% factual, since the hood is closed while driving, and an open-element intake is sucking in hot engine air instead of cold external air.
May 8, 2006, 05:19 PM
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The test should have done with stock intake VS aftermarket with hood closed both. opening the hood helps the engine and many things like intake mani to cool also. It is obvious that it will make more power with hood open.
May 8, 2006, 05:47 PM
#13
I wonder if this also applies on a dyno tuned car, that would suck if you made 350 on the dyno but can't put down the same on the street.
As far as stock intake against open intake there are too much variables imo, such as how the car is tune. I think if the car is tune with the stock intake then it will lose hp on a open intake, vice versa.
Somebody needs to test it though. I would not trust any tuner doing this test just to sell their product or their favorite product.
As far as stock intake against open intake there are too much variables imo, such as how the car is tune. I think if the car is tune with the stock intake then it will lose hp on a open intake, vice versa.
Somebody needs to test it though. I would not trust any tuner doing this test just to sell their product or their favorite product.
May 8, 2006, 11:28 PM
#14
Originally Posted by Warrtalon
The point is that gains seen from an intake on the dyno are not 100% factual, since the hood is closed while driving, and an open-element intake is sucking in hot engine air instead of cold external air.
Read this thread too, there was a guy who measured the temps at speed, he found them to be ALMOST ambient. https://www.evolutionm.net/forums/sh...d.php?t=199834
I say the Dyno runs are accurate at speed.
Last edited by High_PSI; May 8, 2006 at 11:51 PM.
May 9, 2006, 09:46 AM
#15
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Originally Posted by Warrtalon
The point is that gains seen from an intake on the dyno are not 100% factual, since the hood is closed while driving, and an open-element intake is sucking in hot engine air instead of cold external air.