Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Mpg

Thread Tools
 
Search this Thread
 
Old Jun 7, 2015 | 04:13 PM
  #1  
bigskyroadglide's Avatar
bigskyroadglide
Thread Starter
|
Outstanding HDF Member
Joined: Sep 2010
Posts: 2,630
Likes: 185
From: Mountain West, Big Sky Country
Default Mpg

Big fan of the HD ventilator air filter housing (old one not the new billet one )

Installed one on my 04 bike with the HD filter than came with the unit.

Mileage has been fairly consistent under 70 avg mpg is around 35 over 70 it runs around 30.

So filter looked kinda dirty after 15 k or so of miles

Took off washed and re installed, got constant water drip for about a week even after riding.

So, i decided to pickup a k&n replacement for the stock hd one,

Installed today and just got back from a 300 mile ride. Avg mpg below 70 was 39 and above 70 was 36.
Could the air filter have been that restrictive? To impact mpg by 3 to 4 mpg?. Or am i just feeling the new part bliss and my mileage will return to normal after. A few more tankfuls.
 
Reply
Old Jun 7, 2015 | 05:03 PM
  #2  
OldPhat's Avatar
OldPhat
Elite HDF Member
Joined: Dec 2007
Posts: 3,617
Likes: 165
From: Sparks Nevada
Default

I to have a K&N filter, it's a replacement that fits inside the stock Rushmore housing. I
just did a mileage check yesterday and averaged 39 MPG all in town riding this week.
 
Reply
Old Jun 7, 2015 | 06:15 PM
  #3  
digger58's Avatar
digger58
Tourer
Joined: Mar 2015
Posts: 251
Likes: 5
From: On the edge of reason
Default

39.8 today average speed 65-70, lots of hills though
 
Reply
Old Jun 7, 2015 | 06:49 PM
  #4  
decencyxdefied's Avatar
decencyxdefied
Seasoned HDF Member
10 Year Member
Liked
Top Answer: 1
Joined: Mar 2012
Posts: 5,157
Likes: 740
From: new caney, tx
Default

K&n doesn't list mpg gains because ther3 are so many factors that go into it but you got about a 10% bump..which is probably on part with what they are designed to do
 
Reply
Old Jun 8, 2015 | 01:30 PM
  #5  
NoCoLoco's Avatar
NoCoLoco
Road Warrior
Joined: Jul 2009
Posts: 1,979
Likes: 2
From: Northern Colorado
Default

Putting a K&N filter in my SE Ventilator had no effect on gas mileage. My bike averages 35 mpg no matter what I do.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
prezflyr
Touring Models
5
Mar 1, 2014 11:11 PM
mgmmgm
Touring Models
3
May 18, 2012 09:14 PM
jojo2dog
Dyna Glide Models
2
Mar 29, 2010 06:21 PM
pip369
Exhaust System Topics
5
May 11, 2009 01:00 PM
jt1965
Dyna Glide Models
5
Jun 22, 2006 04:21 PM




All times are GMT -5. The time now is 08:51 PM.

story-0
10 Most Awkward-Looking Motorcycles Ever Built

Slideshow: Not every motorcycle can be a design icon, and these machines prove that bold styling doesn't always age gracefully.

By Verdad Gallardo | 2026-06-12 11:58:41


VIEW MORE
story-1
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-2
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-3
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-4
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-5
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-6
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-7
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-8
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-9
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE