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Dual air filters vs. single

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Old 08-21-04, 02:16 PM
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Dual air filters vs. single

I am working on a custom intake setup. I have fabed some intake hardpipes and am contemplating a filter setup. Basically this will be similar to the Pettit system but at a fraction of the cost. My question is, is it more beneficial to run 2 small filters (like the Pettit) or 1 large filter that incorporates 2 inlets I have searched the K&N catalog and found a dual inlet filter that will work. Anyone have any ideas?
Old 08-21-04, 07:51 PM
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I doubt it would really matter much. I would probably just do 2 smaller ones because that's what everyone does. Also, maybe if there is only one filter, the 2 turbos will be "fighting" over the air that is in there, it's a long shot but an idea.
Old 08-21-04, 07:57 PM
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Jezz dude, it's just there to filter the air as it goes into the car. Do you really think its going to matter?
Old 08-21-04, 07:58 PM
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it wouldent really matter, 2 might be better as far as space goes, but then again thats 2 filters to change
Old 08-21-04, 11:01 PM
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All that matters if you have sufficient filter surface area. You'll be fine either way.
Old 08-22-04, 06:06 AM
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I've got that single K&N filterwith two inlets but still got rubber piping.
Old 08-22-04, 03:34 PM
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I am probably going to go with 2 filters just for the simple fact that I eventually plan on going with a fmic and being able to move the filters or shorten pipes would be alot simpler. I didnt really thing it would matter 1 vs. 2 because thats how the stock box is setup, but just wanted to see if anyone else had any input or thought of anything I haven't. I will get some pics posted when complete. I just need to order filters now.
Old 08-22-04, 04:53 PM
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i dont think it matters, either with a single or dual filters, there are separate piping that go to both turbos, i prefer one big single filter like i have (blitz sus) cause its just one entrance..

but mostly i think its for cosmetic and space issues..
Old 08-22-04, 05:03 PM
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If you use two of the same only one will really be on line. Sure the secondary turbo uses it but compared to the primary theres a big gap in usage. My view is the one larger may be a better match with this ratio. Any way you look at it theres just not enough cold air for any intake, unless you have a hood scoop etc.
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