Difference between Stage1 and Stage2 Air Cleaner
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Road Master
Joined: Oct 2012
Posts: 1,240
Likes: 82
From: Columbus, GA
Difference between Stage1 and Stage2 Air Cleaner
So, what exactly is the difference between Stage1 and Stage 2 air cleaners?
My dealer has a Arlen Ness stage 2 air cleaner on it's discount rack. Is there any reason I couldn't use it? I have 4" RH slipons, decatted headers and FL VIEDs.
My dealer has a Arlen Ness stage 2 air cleaner on it's discount rack. Is there any reason I couldn't use it? I have 4" RH slipons, decatted headers and FL VIEDs.
Seasoned HDF Member
Joined: Mar 2008
Posts: 9,384
Likes: 1,776
From: Central Texas
Hey Rob I have never heard of a stage 2 air filter,
the only difference that I know of would be all the
things that come with it. Now if you are interested
in performance have a look at this.
http://www.harley-davidson.com/en_US..._SE13_Full.pdf
the only difference that I know of would be all the
things that come with it. Now if you are interested
in performance have a look at this.
http://www.harley-davidson.com/en_US..._SE13_Full.pdf
Road Warrior
Joined: Jul 2012
Posts: 1,566
Likes: 55
From: Londonderry, NH
It's listed as having 20% more filter capacity. You probably don't need the additional capacity, but it will work just fine.
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Road Master
Joined: Oct 2012
Posts: 1,240
Likes: 82
From: Columbus, GA
I'm not sure of the exact part# that is at the dealer, but it is like this one. They have it for 50% off.
http://shop.arlenness.com/p-3720-200...-stage-ii.aspx
http://shop.arlenness.com/p-3720-200...-stage-ii.aspx
Seasoned HDF Member
Joined: Oct 2010
Posts: 12,230
Likes: 7,807
From: Along the shoreline in SW FL
...is really not much. Mostly just marketing hype.
All the stage numbers are very loosely interpreted...there's not much black 'n white differences in them.
Generally...loosely speaking...
Stage 1 is a more free intake and exhaust system, and sometimes ignition.
Stage 2 brings a cam
Stage 3 brings more inside engine work...head work, blue printing
Stage 4...stuff like forced air via turbo or supercharge, nitrous, or insane displacement increases.
All the stage numbers are very loosely interpreted...there's not much black 'n white differences in them.
Generally...loosely speaking...
Stage 1 is a more free intake and exhaust system, and sometimes ignition.
Stage 2 brings a cam
Stage 3 brings more inside engine work...head work, blue printing
Stage 4...stuff like forced air via turbo or supercharge, nitrous, or insane displacement increases.
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,282
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From: southeast PA
Once you do away with the stock intake and go with a free flow, what really matters at this point is the size of the throttle body. The stock TB will only allow so much air flow, so I don't think what is in front of it would make any difference with a stage 1 set up.
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Club Member
Joined: Feb 2007
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From: Boynton Beach, FloriDuh
Generally, most Stage 1 filters in the round or oval design, like this one, have 2" wide filter elements. The same thing with a 3" element will often be called a Stage 2 filter.
Typically, unless you have a built motor with headwork and cams, a "stage 2" filter won't bring anything to the table.
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Seasoned HDF Member
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From: Along the shoreline in SW FL
I've yet to see any valid article/benchmarks/test/performance article showing that there are big differences in HP gains in aftermarket ACs. A tiny gain above stock...some let a little more sound out (cuz of being more porous...so more abrasive dirt getting in too) and then it's all about money drained from the wallet, and looks.
Banned
Joined: Oct 2009
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From: Nowhere
Point was... phrases like "stage 1" and "stage 2" simply refer to the process of increases in air flow demand through modifications to your motor (internal/external) and the corresponding A/C's are engineered to meet those demands based on the changes implied at that "stage". So, no... it is not just "hype".
Whether or not the engineering actually works, is another subject.