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Old 06-02-2013, 11:37 AM
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6637 DIY intake question

So I just installed the 6637 intake but it was a little too big, and when I closed the hood it kind of dented the filter, is this okay? I don't really notice a sound difference, but when I'm driving I seem to accelerate a little faster, and the RPMs take longer to shift. Also when I turned off my engine, there was a hissing noise coming from around the area of the first pic. And it eventually dies off, is this normal? Thanks!
6637 DIY intake question-imageuploadedbyautoguide1370201854.559270.jpg
6637 DIY intake question-imageuploadedbyautoguide1370201868.721421.jpg
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Old 06-02-2013, 11:42 AM
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Ya the hood squishes the filter a bit. I got the exact same setup as you did for my dad.
The whoosh sound when you shut the truck off is just air going back out the filter. The stock intake does this but you don't hear it because it's enclosed in a box
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Old 06-02-2013, 11:58 AM
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Ohh okay, I actually had the K&N filter before, but for some reason when I was installing the filter, the 4" pipe wouldn't go too deep into the rubber tube so is this going to be a problem? Will there be any leaks, 2nd pic of filter, I clamped them up good.
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Old 06-02-2013, 01:26 PM
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Should be fine I noticed the same thing when I installed it on my dads truck. I thought about cutting the adapter piece and making it shorter
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Old 06-06-2013, 09:17 PM
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I didn't have any issues with the filter touching the hood when I did my DIY 6637 setup. I cut out a bunch of the stock airbox, that may be the difference.
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Old 06-07-2013, 07:09 AM
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Mine had the same thing happen, don't think it makes a difference. Mine also makes a "whooshing" sound sometimes between gears and if I stab the throttle and let off, almost sounds like a blow off valve- but I like it.
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Old 06-07-2013, 07:12 AM
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Quote:
Originally Posted by ttyR2 View Post
I didn't have any issues with the filter touching the hood when I did my DIY 6637 setup. I cut out a bunch of the stock airbox, that may be the difference.
Quote:
Originally Posted by bikeluver43 View Post
Mine had the same thing happen, don't think it makes a difference. Mine also makes a "whooshing" sound sometimes between gears and if I stab the throttle and let off, almost sounds like a blow off valve- but I like it.
have close up pics of your set up's?
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Old 06-07-2013, 07:24 AM
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Quote:
Originally Posted by 2000-7.3L View Post
have close up pics of your set up's?
I can snap one this weekend, my truck is at home. I went a different route and bought a 4" adapter for a sheet metal dryer duct (Item# 39734 @ Lowes, $3.97). Fits nice and snug in both the air filter and the intake tube, doesn't restrict any air (that the 3.5" PVC does). Total into my setup is abour $35

6637 @ everythingtruckparts.com = Donaldson B085011 Air Filter
B0850111 $26.75
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Last edited by bikeluver43; 06-07-2013 at 07:29 AM.
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Old 06-07-2013, 07:29 AM
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here's mine on E99...

dont hit at all
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Old 06-07-2013, 10:00 AM
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Mine:





I built a PCV system and cut off the little oil breather "scoop" in the plastic support tube in the stock intake system and plugged the resulting hole. Then added a short piece of exhaust tubing into the air filter.
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