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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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#1
Sun, November 22nd, 2009, 11:42 AM
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You were correct. I spent a few days playing with that part of the intake and
I tried it. With the snorkel off in the city I saw the temps get up to 126  . But with the snorkel on I saw 106. I'm pretty sure thats right because the temperature was 100 degrees in the shade. I didn't see as much on he highway (maybe 3-6 extra degrees at 50 mph)If your going to try logging the temps, I would log after the engine has been running for a while to get everything warm. Then log one drive with it taken out and another with it in. I have some driving graphs where I recorded IAT by accident and they dont say much. They basically say that the temp went up about 1-3 degrees per minute until I got enough speed to blow cooler air in. When I was looking into temps for the intake I did a few at idle and they said the air is about 20 degrees warmer without the snorkel.
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#2
Sat, November 28th, 2009, 05:05 AM
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For what it's worth, for years auto manufacturers had the intake snorkels under the hood. Of course, they were trying to vaporize/homogenize the air/fuel mixture so a little warm air didn't hurt anything. Since the ECM compensated for inlet temp, I don't see any reason why you couldn't suck air right from under the hood. Now whether you'd want to or not is another matter.
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Bill Cohron - The Mad Doctor   Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back  Windows™ XP and 7.  Windows™ Vista and Windows™ 8 is a pain in my a$$!  Windows™ 10 is only slightly less annoying!  Windows™ 11 is garbage!  Much to my surprise, I'm actually quite enjoying Linux! 
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