Stage 1 High Flow Air Cleaner
MODERATOR
Joined: Oct 2007
Posts: 4,108
Likes: 1,964
From: New England
Many aftermarket systems are advertised to flow at great volumes. What they don't say is that almost no stock (or nearly stock) system will ever get close to needing flows offered by those aftermarket systems. There's a huge difference between what the aftermarket air cleaner system will flow as opposed to what you motor can flow even at its max rate.
In short, most will gain almost nothing going to a "high flow" system...your motor simply doesn't pull that much air.
Ultimate HDF Member
Joined: Dec 2010
Posts: 7,776
Likes: 2,252
From: wet coast BC
flow at idle will be considerably less than at 6000. very little is said about what rpm a particular filter reaches max flow. at 3000 most if not all will flow enough for engine demand. The occasional redline run may require an upgrade to flow enough. The engine determines what it can handle, not the ability of the filter.
The stock Rushmore has been flow tested to be more than adequate for a stage 1 exhaust. so the moco has supplies a stock filter that works but people are too used to changing out stock to even realize it.
The stock Rushmore has been flow tested to be more than adequate for a stage 1 exhaust. so the moco has supplies a stock filter that works but people are too used to changing out stock to even realize it.
Ultimate HDF Member
Joined: Nov 2005
Posts: 5,926
Likes: 138
From: NE Ohio
Unless you are making significant changes in the intake, heads, pistons, and exhaust, the stock air cleaner flows more then even a slightly modified system requires.
Many aftermarket systems are advertised to flow at great volumes. What they don't say is that almost no stock (or nearly stock) system will ever get close to needing flows offered by those aftermarket systems. There's a huge difference between what the aftermarket air cleaner system will flow as opposed to what you motor can flow even at its max rate.
In short, most will gain almost nothing going to a "high flow" system...your motor simply doesn't pull that much air.
Many aftermarket systems are advertised to flow at great volumes. What they don't say is that almost no stock (or nearly stock) system will ever get close to needing flows offered by those aftermarket systems. There's a huge difference between what the aftermarket air cleaner system will flow as opposed to what you motor can flow even at its max rate.
In short, most will gain almost nothing going to a "high flow" system...your motor simply doesn't pull that much air.
.
Tourer
Joined: Nov 2013
Posts: 327
Likes: 9
From: Itchiegoomaland
I tried looking for a K&N replacement filter, but couldn't find the right one.
Would you mind sharing the part number?
Dang ... I got flim-flammed again! 
Would you mind sharing the part number?
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
K&N:
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
I'm real happy with the way my bike runs.
Club Member
Joined: Apr 2013
Posts: 7,682
Likes: 8,414
From: Utah
My wife and I have 2 Limiteds, 2014 for me and 2015 for her and we went with V&H Power Duals, Monster Ovals for me Rounds for her and Arlen Ness Big Sucker AC. Bought a Dynojet PV2 for each bike and we are very happy with the way they run. Installation for everything was easy hassle free and the PV is simple to use and easy to Auto-tune.
Good luck
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Seasoned HDF Member
Joined: Feb 2011
Posts: 6,194
Likes: 4,126
From: Michigan
I have a 14 ultra limited that I did a stage 1 on. I kept the stock air cleaner and just replaced the filter with a K&N filter. Had the bike dyno and it runs awesome. I was told that the stock air cleaner flows just as good as an aftermarket stage one. It's now putting out 96hp. With 112 ft lbs. I used Mastertune TTS, Screaming Eagle Street Cannons and stock a/c with K&N filter. Good Luck, enjoy the bike!
Hard to believe.
Ultimate HDF Member
Joined: Feb 2009
Posts: 5,132
Likes: 228
From: Garland, TX
Unless you are making significant changes in the intake, heads, pistons, and exhaust, the stock air cleaner flows more then even a slightly modified system requires.
Many aftermarket systems are advertised to flow at great volumes. What they don't say is that almost no stock (or nearly stock) system will ever get close to needing flows offered by those aftermarket systems. There's a huge difference between what the aftermarket air cleaner system will flow as opposed to what you motor can flow even at its max rate.
In short, most will gain almost nothing going to a "high flow" system...your motor simply doesn't pull that much air.
Many aftermarket systems are advertised to flow at great volumes. What they don't say is that almost no stock (or nearly stock) system will ever get close to needing flows offered by those aftermarket systems. There's a huge difference between what the aftermarket air cleaner system will flow as opposed to what you motor can flow even at its max rate.
In short, most will gain almost nothing going to a "high flow" system...your motor simply doesn't pull that much air.
Your stock rushmore intake with a k&n filter will provide more than enough air than your engine needs. Don't buy into the nonsense that you "need" a different intake.