There is a persistent myth perpetuated on the internet, at some dealerships, and who knows where else....
Myth: the Stock Air Cleaners on the 103 Twin Cams, like found on the Rushmore Models, is a Stage I High Flow Air Cleaner.
While the new stock air cleaners (2014-Up) are less restrictive than previous years stock air cleaners, they are still very restrictive.
We knew this from seat of the pants experience. But "Internet Truth" being so widely accepted, we decided to put it to the test....on a Dyno...and publish the results.
Here they are:
2014 Rushmore High-Output Twin Cam 103 with the stock "High Flow" air cleaner vs. a DK Outlaw Real High Flow Air Cleaner.
A 9.5% Increase in power when you twist the throttle pretty much says it All.
Over 9 ft lbs increase in Torque and a 6 Horsepower gain by replacing the "High-Flow" Stock Air Cleaner with an Outlaw High Flow Air Cleaner System.
Many folks are happy if they get that much gain out of a set of cams!
Kevin