103 air filter...
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Outstanding HDF Member
Joined: Feb 2012
Posts: 2,053
Likes: 39
From: San Diego
103 air filter...
Does the 103 require an aftermarket high flow air filter.
I was told that engine comes with an intake that provides all the air the engine needs due to a larger throttle body.
Does that specific engine benefit from a higher flow filter, and at what RPM's does the improvement show up?
In the past, everybody did the air filter as part of a stage 1. Is this still a benefit?
I was told that engine comes with an intake that provides all the air the engine needs due to a larger throttle body.
Does that specific engine benefit from a higher flow filter, and at what RPM's does the improvement show up?
In the past, everybody did the air filter as part of a stage 1. Is this still a benefit?
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
the stock air cleaner is restrictive to noise emissions compliance.
a high flow air cleaner along with high flow mufflers will give 7 to 10 horsepower. ( "stage 1", which most often requires tuning compensation)
just air cleaner alone will see little benefit
some riders complain about the intake noise of a high flow air cleaner, a 'flutter" may be heard by the rider as well as the 'white noise" of air moving
almost all high flow air cleaners will allow more air flow than the motor demands ( stay away from the hype charger). most of the cast type backing plate incorporate an air horn which orders the air into the intake- turbulent air moves slower
in many cases the rider changes as they desire an oiled reusable filter over a disposable paper filter, such as a K&N or the similar which is used in the Ness Big Sucker.
The Ness is my bang for buck choice at about $120 on ebay from easternpc, also has a chrome backing plate which complements the motor- and an easier install in that the tank and the throttle body brace stay in place
an open air cleaner will see the biggest benefit at higher rpms, although the easy availability of air at low rpms may improve throttle response
mike
a high flow air cleaner along with high flow mufflers will give 7 to 10 horsepower. ( "stage 1", which most often requires tuning compensation)
just air cleaner alone will see little benefit
some riders complain about the intake noise of a high flow air cleaner, a 'flutter" may be heard by the rider as well as the 'white noise" of air moving
almost all high flow air cleaners will allow more air flow than the motor demands ( stay away from the hype charger). most of the cast type backing plate incorporate an air horn which orders the air into the intake- turbulent air moves slower
in many cases the rider changes as they desire an oiled reusable filter over a disposable paper filter, such as a K&N or the similar which is used in the Ness Big Sucker.
The Ness is my bang for buck choice at about $120 on ebay from easternpc, also has a chrome backing plate which complements the motor- and an easier install in that the tank and the throttle body brace stay in place
an open air cleaner will see the biggest benefit at higher rpms, although the easy availability of air at low rpms may improve throttle response
mike
Last edited by mkguitar; Dec 18, 2012 at 12:22 PM.
Tourer
Joined: Dec 2010
Posts: 460
Likes: 1
From: Frisco TX
Does the 103 require an aftermarket high flow air filter. All Stock Harleys run better with a free flowing air intake.
I was told that engine comes with an intake that provides all the air the engine needs due to a larger throttle body. The touring 103 has the same throttle body that the 96 has had since 2008.
Does that specific engine benefit from a higher flow filter, and at what RPM's does the improvement show up? All RPMs.
In the past, everybody did the air filter as part of a stage 1. Is this still a benefit?
I was told that engine comes with an intake that provides all the air the engine needs due to a larger throttle body. The touring 103 has the same throttle body that the 96 has had since 2008.
Does that specific engine benefit from a higher flow filter, and at what RPM's does the improvement show up? All RPMs.
In the past, everybody did the air filter as part of a stage 1. Is this still a benefit?
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