Sportster Models 883, 883 Custom, 1200 Custom, 883L, 1200L, 1200S, 1200 Roadster, XR1200, and the Nightster.
Sponsored by:
Sponsored by:

Flat Spots ...

Thread Tools
 
Search this Thread
 
Old Feb 17, 2011 | 11:09 PM
  #1  
Rio 1_2's Avatar
Rio 1_2
Thread Starter
|
4th Gear
Joined: Jul 2010
Posts: 8
Likes: 0
From: Johannesburg, South Africa
Default Flat Spots ...

Hey guys.....I recently removed and replaced my SE Baffles with different one done by a Harley Dealer. Since then I have picked up this annoying flat spots where the bikes becomes hesitant and eventually throttles through.

I was advised that it will be sorted once I install the HD SERT. Being very expensive I read the forum and decided to do the Stage 1 SE AC and have the maps downloaded - which needless to say still does not sort my problem out.

I am now forced to purchase the SERT which BTW was not advised to me by the HD Technician - that this will be the outcome once you CHANGE YOUR BAFFLES - DUDE!. So in a nutshell === will this eventually sort me out and help my bike perform like a dream or will have to do something else again! I am prettty pissed at this dealership as they in my oppinion will do everything to squeeze you out of your pennies at the expense of their reputation....pretty F&^king disappointing.

I have read the technical and practical advantages of the SERT. Once installed, will the SERT and the Stage 1 SE AC transform my bike?....
2010 Irron 883
SE Mufflers
Stage1 SE AC
SIdekick Seat with Sissy Bar

thnx guys - keep it on the black stuff!
 
Reply
Old Feb 17, 2011 | 11:37 PM
  #2  
Ernie 06's Avatar
Ernie 06
Advanced
Joined: Dec 2009
Posts: 71
Likes: 0
From: San Diego
Default

My bike always had a flat spot until i took it to a dyno tuner
 
Reply
Old Feb 18, 2011 | 07:24 AM
  #3  
GarfieldM's Avatar
GarfieldM
Intermediate
Joined: Feb 2011
Posts: 28
Likes: 0
Default

Doesn't sound related to baffles but it does sound like you are being up-sold. Baffles quiet spent gases. To burn the gas it has to be delivered first and it sounds like more of a fuel delivery problem than anything else in my opinion.
 
Reply
Old Feb 18, 2011 | 08:29 AM
  #4  
beanerblank's Avatar
beanerblank
Tourer
Joined: Apr 2009
Posts: 330
Likes: 2
From: IL
Default

If you installed the Air cleaner and mufflers you need atleast the download from the dealer not to run lean. Now to tune the bike you will need some type of fuel management system, power commander, fuel pack, sert. The new baffles are probably your problem unless you haven't got the download. Hope this helps.
 
Reply
Old Feb 19, 2011 | 12:31 AM
  #5  
Rio 1_2's Avatar
Rio 1_2
Thread Starter
|
4th Gear
Joined: Jul 2010
Posts: 8
Likes: 0
From: Johannesburg, South Africa
Default Flat Spots

Okay.....so I do I know if the latest downloads have been installed....BTW. I have the Stage SE AC installed by a dealer and apparently he downloaded the latest ECM mappings. Please advise me as where I can buy a SERT from realtively cheaper than HD themselves and get this problem sorted out.

Thansk for the responses.....
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
odons
Sportster Models
17
Sep 25, 2009 11:19 AM
jcsurf
Exhaust System Topics
2
Mar 25, 2008 06:48 PM
spirit80
Touring Models
25
Mar 16, 2008 02:08 PM
brian37776
Ignition/Tuner/ECM/Fuel Injection
2
Jul 28, 2006 03:53 PM
Caston
Dyna Glide Models
6
Mar 18, 2006 04:45 AM




All times are GMT -5. The time now is 01:49 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE