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01-08-2013, 05:28 PM | #45 | |
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wow, just wow. I wont be entering back into this thread pixel - so she's all yours...go ahead and troll away. Again, I ask - who in this thread has an education that allows them to truly comment? |
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01-08-2013, 05:42 PM | #46 | |
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"I would quote everything pixelblue said, but you've already read it. Take it from someone who's put the 1 through its paces"
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01-08-2013, 06:32 PM | #47 |
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I dont buy the "ram air" conclusion... because the tune, be it factory or aftermarket, will auto adjust for a certain load no matter what... but taking in cooler air via a front grill scoop design will lower the intake air charge temps and thus be a lot better for performance then open air filters sitting in a hot engine bay...
but of course there are so many variables to test it all wouldnt be cost effective and thus everyone just does what they want on an emotional level of what in their mind is the better choice usually. Ive seen no dyno's or real world number proving the scoops improve ET's or track times so in conclusion do whatever makes you sleep at night. lol |
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01-08-2013, 06:54 PM | #48 | |
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There is not one solution that applies to every scenerio. Hence why I posed the question about the venturi affect (creating opposing vacuum on intake) on the horizontal stock intake at higher speeds. Basically it would appear the greatest gains would be to remove the restiction as opposed to trying to compensate for it. I realize BMW has designed an intake that is efficient at stock levels. I question whether or not it is ample at higher levels. If it is, we should effectively be able to close one of the intakes above the radiator at stock levels and see no change in performance. Then theorectically it would be more likely (but not certain) that the stock system can support twice the boost. Yes I realize this is way over simplifing it as I doubt the volume of air required is linear as the boost is increased.
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01-08-2013, 08:29 PM | #50 |
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I know this is a little off topic, but you guys got me thinking. I've always thought those openings in the front must be restrictive. I decided to go out to the garage and measure the openings and compare the cross-section to the inner diameter of the air box exit pipes. The inner diameter of the air box outlets on the N54 was approximately 48mm giving a total cross-section of 1,809 sq/mm x two outlets The plastic OEM down scoops actually narrow in the bend. The cross-section is a right-angle trapezoid. At the narrowest part the right angle lengths were 34mm high on one side, 142mm long, and 14mm on the other side. I came up with a cross-section area of 3,408 sq/mm x two openings. Now I recognize air travels differently around a bend and in a square-ish pipe, but it would appear that BMW gave us nearly two time the cross-section in the front openings when compared to the pipes leaving the air box. I don't know what this means, but thought it may be interesting to someone.
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01-08-2013, 10:22 PM | #51 |
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No, I think that is a good point..nice job.
One thing to note in those 90 degree bends you reference....they're on a radius as is virtually all of the bends in the intake....gee, wonder why BMW didn't put in right angles....again, why I think the Cyba scoops are designed more for simplicity of manufacturing and looks as opposed to functionality.
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01-08-2013, 11:53 PM | #52 | |
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01-09-2013, 12:03 AM | #53 |
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Airfilter will play it's part on incoming air turbulence. From there it can go to another "XXX" part...throttlebody. Just prodding the fire I guess. Have at it fellas.
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01-09-2013, 12:38 AM | #54 |
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01-09-2013, 01:43 AM | #55 |
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For the love of tits! It's 40 bucks! If it helps with airflow, sweet! If it doesn't, IT WAS 40 BUCKS! You drive a damn 1 series! People spend more money on freaking stickers for their emblems. That doesn't do anything HP wise either. Consider the scoops a cosmetic mod if it makes you feel better.
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01-10-2013, 12:39 AM | #56 | |
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01-10-2013, 01:53 AM | #57 | |
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02-10-2013, 08:40 AM | #58 | |
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02-10-2013, 11:49 AM | #60 |
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I think he does.
The intake location for the stock CAI is in a very high pressure area, the front of the grill. "Scoops" add nothing to that because there is already more air piled up at the openings then the intake tract can take in. The factory designed it that way & there is noting new about using that location for the start of the intake tract. The aftermarket scoops are strictly for show no matter what the guys trying to make a $100 off them claim.
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02-11-2013, 07:28 AM | #62 | |
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