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I am starting to draw up plans for my intake, I am making my own box or shield out of aluminum. So if I understand Kelly's research correct, with his intake and the stock box it creates Positive flow which would be considered better then neutral air flow am I correct on that? My main questions are is bigger really better? And is it better to run open element or enclosed. And would Exterior insulation help with keeping the inside air colder? <A HREF="http://www.lizardskin.com" TARGET="_blank">http://www.lizardskin.com</A>/ . Was the product I was thinking about, Any ideas are very welcome, I am making it out of scrap (can't beat free <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> ) sheet aluminum and aluminum hard pipe that we have at the shop TIG welded of course. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/embeer.gif" BORDER="0"> <p>Thanks in advance,<br>David<p>
 

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Re: Yet more intake Q's (Rally_Junky)

1. Not positive flow, positive pressure. Meaning the engine is not sucking on a restriction at WOT. <p>2. Closed element is better if you can feed it enough. <p>3. COOLER is better. The more you can do to keep the air cool the better. That means closed element, and yes insulation would help. <p>4. Bigger isn't better. All you need is big enough to avoid negative pressure in the tract at any point
 

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Re: Yet more intake Q's (Rally_Junky)

In addition to keeping cold air cold (away from air heated by engine), the most important thing is square area of your intake and whether it faces directly into airstream, to maximize "ram air" effect to feed filter. <p>The filter is the next thing, the stock filter is actually decent for a stock paper filter, but BMC/K&N/J&R do flow more, although I have never seen how much more quantified.
 

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Kelly's intake has been proven to eliminate the vacuum placed in the airbox, which definitely helps with getting the turbine/compressor assembly spinning quicker. <br>The placement of your intake has <b>very little</b> to do with your intake air temperatures.<br>A) whether the air is coming from out front of the car or conversely, right next to the exhaust manifold, it still has to go through an extremely hot turbocharger, so the air will be getting pretty warm <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"><br>B) The same air has to go through an intercooler which is the primary means for cooling your intake air. <p>I have experimented with this a bit and whether the air filter was placed next to the engine or completely sealed off (such as the Evolve unit), the air temps remained very close to ambient temperatures. <br>Of course this is only true with an efficient intercooler. Sorry Volvo.<br>I imagine you would see the same relationship for the stock intercoolers, just at a higher temperature offset.
 

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Re: (phuz)

something like this?<p><IMG SRC="http://farm4.static.flickr.com/3622/3502927970_1f7df922ea_o.jpg" BORDER="0">
 
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