Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - Custom Ram Air maybe??
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Old 04-05-2013, 12:37 AM   #4
amc49
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The actual flex tube after the plastic part, or the tube that goes under battery tray to attach to bottom of airbox, is porous, meaning you are still not getting pure cold air there. Kinda silly really the way they designed it.

You're looking for COLD air, not ram air, you get no benefit from ram air until over 100 mph and even then the ducting must be pretty straight.

Look here at pics...........

http://www.focusfanatics.com/forum/showthread.php?t=171885
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