Harley Davidson Forums

Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
Sponsored by:
Sponsored by:

Tune or other issues?

Thread Tools
 
Search this Thread
 
Old Aug 22, 2022 | 12:16 PM
Share
  #11  
shh2734's Avatar
shh2734
Thread Starter
|
Intermediate
Joined: Aug 2015
Posts: 45
Likes: 5
From: Bloomingdale, NJ
Default
Originally Posted by flh canuck
Those plugs look like they have a few miles on them and are overdue for replacement. A dyno tune performed by an experienced tech will be the best money you ever spent and should increase both fuel mileage and performance from where you are presently at.
The plugs aren’t that old maybe 10,000 miles give or take.
 
Reply
0
Old Aug 22, 2022 | 12:42 PM
Share
  #12  
mjwebb's Avatar
mjwebb
Seasoned HDF Member
15 Year Member
Photogenic
Community Builder
Top Answer: 1
Joined: Jan 2008
Posts: 13,672
Likes: 11,459
From: State of Confusion
Default
have you checked for any codes in the DTC menu, maybe an 02 sensor or something acting up..I'm just using that as an example of a wild @$$ guess..try posting this problem in the forum where the real experts reside..

https://www.hdforums.com/forum/ignit...-injection-55/
 
Reply
0
Old Aug 22, 2022 | 01:13 PM
Share
  #13  
shh2734's Avatar
shh2734
Thread Starter
|
Intermediate
Joined: Aug 2015
Posts: 45
Likes: 5
From: Bloomingdale, NJ
Default
Originally Posted by mjwebb
have you checked for any codes in the DTC menu, maybe an 02 sensor or something acting up..I'm just using that as an example of a wild @$$ guess..try posting this problem in the forum where the real experts reside..

https://www.hdforums.com/forum/ignit...-injection-55/
yes I have checked for codes, there are no codes. But I did notice that when the bike is not running one of the o2 sensors was reading 5.10 volts, but with the bike running it seemed to be the same as the other one. I will try posting in the other section. Thanks.
 
Reply
0
Old Aug 22, 2022 | 01:41 PM
Share
  #14  
Fullbore55's Avatar
Fullbore55
Grand HDF Member
5 Year Member
Liked
Loved
Top Answer: 1
Joined: Sep 2016
Posts: 3,522
Likes: 3,704
From: South Texas
Default
To my eyes, the two pics in original post look identical to one another…
 
Reply
0
Old Aug 22, 2022 | 02:42 PM
Share
  #15  
shh2734's Avatar
shh2734
Thread Starter
|
Intermediate
Joined: Aug 2015
Posts: 45
Likes: 5
From: Bloomingdale, NJ
Default
Originally Posted by Fullbore55
To my eyes, the two pics in original post look identical to one another…
I think your right. How the hell did I do that🙄
I will try and get the right pics in there.
 
Reply
0
Old Aug 22, 2022 | 02:49 PM
Share
  #16  
shh2734's Avatar
shh2734
Thread Starter
|
Intermediate
Joined: Aug 2015
Posts: 45
Likes: 5
From: Bloomingdale, NJ
Default
Here are the right pics.

Front


Rear
 
Reply
1
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
2021/2022 California screaming eagle tune
Silidons
Ignition/Tuner/ECM/Fuel Injection
23
Jun 11, 2023 03:22 PM
Blown Piston
shoaljumper
Engine Mechanical Topics
8
Aug 18, 2022 09:40 PM
Dyno a 2021 SGS?
djtj
Milwaukee Eight (M8)
14
Aug 5, 2021 02:33 PM
SE-447 Cam and HD box tune for the setup
pritzent
Milwaukee Eight (M8)
8
Dec 27, 2019 01:02 AM
Tuning
KICKSTAND1966
Touring Models
5
Nov 21, 2015 01:27 PM
Back to Subforum
Milwaukee Eight (M8)
View Next Unread
S&S 128 Dyno Results




Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 01:36 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE