riff raff 6637 vs afe stage 2 cold air intake - Ford Powerstroke Diesel Forum
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Old 08-27-2013, 06:57 AM
arp arp is offline
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riff raff 6637 vs afe stage 2 cold air intake

Which one am i better off going with here guys? Also, I live in Minnesota, do I need to do anything differently with a aftermarket cold air intake in the winter?? Any help here would be appreciated! I will be doing 4" turbo back straight pipe and a php phoenix chip along with this I just want to know what the best is to go with on cold air intake??
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Old 08-27-2013, 07:36 AM
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This is going to be a thread of opinions. It's all about preference and your budget.

+1 for the 6637

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Old 08-27-2013, 07:47 AM
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6637 is kinda the go to CAI for the 7.3. Because its cheap and easy. Most guys just do it themselves, no need for a kit. From what i hear is the AFE is actually a bit better but its not enough to warrant the added cost of the AFE. Plus replacement 6637s are only ~$25
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Old 08-27-2013, 07:48 AM
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6637 works well enough and low enough in cost. and i never covered mine too and over used it. still worked like a champ.
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Old 08-27-2013, 07:49 AM
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Thats kind of what I figured, seems like everyone is kind of talking the 6637 up in my mind, and for the cost you cant's hardly go wrong... Might be going that way. Also, on this link http://www.riffraffdiesel.com/mm5/RE...structions.pdf it talks about a re-route mod on step 3? Is that something to consider or is it part of the kit?? Or dont worry about it?
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Old 08-27-2013, 07:51 AM
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I just installed the 6637. I think I paid a total of $50 for filter, 4" pipe and shipping. It is super easy to install.

But it isn't a CAI.
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Old 08-27-2013, 07:52 AM
arp arp is offline
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How About during the winters? Do anything different?
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Old 08-27-2013, 07:53 AM
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Compated to my drop in filter


Installed
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Old 08-27-2013, 07:53 AM
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i dont think it was any different. but then again i lived in north texas where it got down to 15*. didnt have any issues.
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Old 08-27-2013, 07:55 AM
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I am going to be getting a water repellant outerwear for my filter soon, just to be safe and make the filter last longer. plus I did the zoodad mod so the outerwear should stop any water that might come through my zoodad from reaching my engine.

TEMP* | 20-2087 | 8775
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