The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > EFI Sportster Motorcycle Talk (2007 and up)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

EFI Sportster Motorcycle Talk (2007 and up) For 2007 and above Sportsters

Active Threads
0 Who's still riding???
Last Post: Iron Mike
Posted On: 1 Minute Ago
Replies: 151
Views: 12,760
0 You asked for it! "The Tess' Coffee Thread"
Last Post: Flame__
Posted On: 22 Minutes Ago
Replies: 10,467
Views: 765,124
0 ....1
Last Post: bplinson
Posted On: 31 Minutes Ago
Replies: 4,762
Views: 237,428
0 What Sort Of Sporty Have You Got?
Last Post: Folkie
Posted On: 39 Minutes Ago
Replies: 1,063
Views: 283,105
0 Stabliser Tie-link 16232-04
Last Post: Folkie
Posted On: 1 Hour Ago
Replies: 14
Views: 156
0 Lets see your off season builds
Last Post: Vohnsen
Posted On: 1 Hour Ago
Replies: 1,196
Views: 131,907
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 1 Hour Ago
Replies: 42,468
Views: 6,583,665
0 Hot Rods, Rat Rods, and Customs.
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 2,950
Views: 301,191
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 9,558
Views: 795,958
0 Top End Not Oiling
Last Post: Vanmor
Posted On: 2 Hours Ago
Replies: 15
Views: 501
0 Winter Sucks
Last Post: Glamazon
Posted On: 4 Hours Ago
Replies: 10
Views: 274
0 Her indoors
Last Post: Glamazon
Posted On: 4 Hours Ago
Replies: 3
Views: 183
0 Hello from NE Washington state.
Last Post: Glamazon
Posted On: 4 Hours Ago
Replies: 14
Views: 244
0 Crusty's Travels
Last Post: SonWon
Posted On: 4 Hours Ago
Replies: 1,894
Views: 205,444
0 Big Bore '03 883R :)
Last Post: t120r
Posted On: 5 Hours Ago
Replies: 18
Views: 571
9 weird sound coming from left side ?
Last Post: IXL2Relax
Posted On: 6 Hours Ago
Replies: 3
Views: 93
0 1981 basket- restomod questions
Last Post: drumbrake
Posted On: 8 Hours Ago
Replies: 23
Views: 809
0 which plug for dual plug heads
Last Post: ryder rick
Posted On: 8 Hours Ago
Replies: 16
Views: 494
0 Do Loud Pipes in fact save lives?
Last Post: Jarlaxle
Posted On: 8 Hours Ago
Replies: 2,452
Views: 248,342
0 Mystery oil splatter in exhaust
Last Post: T_worth
Posted On: 8 Hours Ago
Replies: 4
Views: 134
0 Roads I'd like to ride.
Last Post: sportytrace
Posted On: 8 Hours Ago
Replies: 959
Views: 59,887
0 how many run baffles, run open, or just run stock
Last Post: Bama Lee XLC
Posted On: 8 Hours Ago
Replies: 381
Views: 78,071
0 Solo spring seat on 08 Nightster?
Last Post: Toejam503
Posted On: 9 Hours Ago
Replies: 3
Views: 59
0 Shipping woes
Last Post: Hippysmack
Posted On: 9 Hours Ago
Replies: 2
Views: 107
0 In Tank Oil Filter?
Last Post: IronMick
Posted On: 9 Hours Ago
Replies: 6
Views: 212
0 Valve guide replacement SOP
Last Post: NHPS
Posted On: 9 Hours Ago
Replies: 21
Views: 568
0 04 Battery Cover on a 95
Last Post: F1J1
Posted On: 10 Hours Ago
Replies: 35
Views: 921
0 Average age of the Ironhead forum users
Last Post: sltm1
Posted On: 11 Hours Ago
Replies: 430
Views: 73,974
5 1200 or 883
Last Post: Jarlaxle
Posted On: 11 Hours Ago
Replies: 1,014
Views: 304,263
0 What oil temp do you run
Last Post: JKKO
Posted On: 12 Hours Ago
Replies: 99
Views: 18,670
More...
Members Birthdays
IronHead83, AMATRAVELER (57), ZYBAN (55), tom_ski (54), mid30 (53), im_justin_sane (51), DOZER (49), acman145acp (49)
Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1  
Old 27th June 2008
krono's Avatar
krono krono is offline
Senior Chief Master Mechanic
 
Join Date: Feb 2008
Posts: 980
Sportster/Buell Model: XL 883
Sportster/Buell Year: 2004
Sportster/Buell Model #2: XL 1200 C
Sportster/Buell Year #2: 2008
Other Motorcycle Model: Motomel X3M 125
Other Motorcycle Year: 2007
Reputation: 11783
krono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of light
Talking EFI - how to get the harley potato sound [HOW TO]

EFI - how to get the harley potato sound

Well, just writing to tell my experience about the EFI in Sportsters.

This is my quest to try to get the "Harley Sound" in a EFI bike, I suceed pretty OK, after lots of troubles.

I compare with a 2004 with Screaming Eagle II pipes, loud bass deep potato-potato, very Harley, but not loud enough to be illegal (here).

I got the Harley Sound in a 2008 1200 C using Screaming Eagle Street Performance pipes + custom inner baffles made from scratch in a car muffler shop here.

The stock pipes or the Screaming Eagle Street Performance pipes does not provide the classic potato sound, but more like a 3CV sound, so I needed to mod them.

The good thing is that you don't need to remap the EFI (if you don't change the A/C)

But, you still must do something, was expensive to me because the mech guys screwed it the 1st time, but after it goes right, you will love it

What I did, please check this graphics



Replace the inner mufflers of the Screaming Eagle Street Performance with a Screaming Eagle II clone custom made.
This will make the engine run properly, a little cooler (seat of the pants).
The only thing is that you will notice that the idle speed of the EFI bikes are more smooth and little faster than carburetor versions.
The sound is very deep, not loud like annoying loud, but lots of bass sounds, very deep and pleasant voice.
The good thing is that you don't need to remap or put any fuel manager.
I may put a A/C in the future and then you will need to remap or use fuel manager.

What you should NOT do:
Open totally the baffles (drag pipes-like), this will produce farts, bad performance, and horrible noise.

Hope this experimentation is useful for other EFI owners when modding their bikes.

Also, thanks for everybody that wrote to me to help me figure this.
__________________
Krono in Argentina
883 XL 2004, 1200 C 2008, Daelim Liberty 50cc, Motomel X3M 125
My Wife Yes. My Dog Maybe. My Harley?... NEVER!
Reply With Quote
  #2  
Old 28th June 2008
BluBoy's Avatar
BluBoy BluBoy is offline
Biker
 
Join Date: Apr 2008
Location: With a wonderful woman.
Posts: 93
Sportster/Buell Model: 883
Sportster/Buell Year: 2007
Reputation: 209
BluBoy is on a distinguished roadBluBoy is on a distinguished roadBluBoy is on a distinguished road
Default

Very interesting,.......

I'm lookin' to get that deep "potato" sound myself. Now, I'm not sure which way to go with my 883 EFI, but thanks for the tip and the drawings. Good food for thought.
__________________
Love the Twisties
2007 883 EFI Sportster, Pacific Blue Pearl
1980 L-82 ( Corvette ) w/454 Auto-X suspension

Proud to be a Patriot Guard Rider

Let the "G" Force be with you!
Reply With Quote
  #3  
Old 28th June 2008
Desert Drifter Desert Drifter is offline
Biker
 
Join Date: Apr 2008
Posts: 20
Sportster/Buell Model: 883L
Sportster/Buell Year: 2007
Desert Drifter has disabled reputation
Default

I just drilled out the baffle caps in the stock mufflers for now. Nice sound, not real low but it's got that Harley sound.

On the potato scale it's a 3.5 out of 5.
Reply With Quote
  #4  
Old 28th June 2008
BluBoy's Avatar
BluBoy BluBoy is offline
Biker
 
Join Date: Apr 2008
Location: With a wonderful woman.
Posts: 93
Sportster/Buell Model: 883
Sportster/Buell Year: 2007
Reputation: 209
BluBoy is on a distinguished roadBluBoy is on a distinguished roadBluBoy is on a distinguished road
Default

Baffle caps?
Please explain.
Is there a downside to this?
Reply With Quote
  #5  
Old 28th June 2008
krono's Avatar
krono krono is offline
Senior Chief Master Mechanic
 
Join Date: Feb 2008
Posts: 980
Sportster/Buell Model: XL 883
Sportster/Buell Year: 2004
Sportster/Buell Model #2: XL 1200 C
Sportster/Buell Year #2: 2008
Other Motorcycle Model: Motomel X3M 125
Other Motorcycle Year: 2007
Reputation: 11783
krono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of lightkrono is a glorious beacon of light
Default

I will try to record a video of the new pipes today, but I can show a video of the pipes sound before (using the stock Screaming Eagle Street Performance inner baffles).

http://youtube.com/watch?v=8cP8MyZ_2q4

also, for comparison, the sound of a carbureted 2004, with Screaming Eagle II pipes without any extra mod. (I own this bike too)

http://youtube.com/watch?v=j0HOxlsh_BY


The video of the mod I did coming soon...
Reply With Quote
  #6  
Old 28th June 2008
el jinete fantasma's Avatar
el jinete fantasma el jinete fantasma is offline
Master Custom Bike Builder
 
Join Date: Mar 2007
Location: Los Angeles
Posts: 3,086
Sportster/Buell Model: XL1200N-Traded :(
Sportster/Buell Year: 2007
Other Motorcycle Model: Harley Fat Bob
Other Motorcycle Year: 09
Reputation: 6160
el jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really nice
Default

The closest I've heard a modern Sporty get to that classic Harley sound is the Samson(?) exhaust on Oildripper's bike. Many, it sounds beautiful!
__________________
Edward
Pasadena Motorcycle Club
http://pasadenamc.com
Reply With Quote
  #7  
Old 28th June 2008
BluBoy's Avatar
BluBoy BluBoy is offline
Biker
 
Join Date: Apr 2008
Location: With a wonderful woman.
Posts: 93
Sportster/Buell Model: 883
Sportster/Buell Year: 2007
Reputation: 209
BluBoy is on a distinguished roadBluBoy is on a distinguished roadBluBoy is on a distinguished road
Default

I noticed that there is a kind of "dimple" on the lower edge of the exhaust tip. Is this to hold the baffle in place?
Reply With Quote
  #8  
Old 30th June 2008
Cutler03gt's Avatar
Cutler03gt Cutler03gt is offline
Biker
 
Join Date: May 2008
Posts: 7
Reputation: 10
Cutler03gt is an unknown quantity at this point
Default

Nice write up Krono, no wonder why you are pictured in Wikipedia under Sportster lol.
__________________
08 Nightster
Flipped mirrors
Belt guards removed
Screamin Eagle A/C
Reply With Quote
  #9  
Old 30th June 2008
el jinete fantasma's Avatar
el jinete fantasma el jinete fantasma is offline
Master Custom Bike Builder
 
Join Date: Mar 2007
Location: Los Angeles
Posts: 3,086
Sportster/Buell Model: XL1200N-Traded :(
Sportster/Buell Year: 2007
Other Motorcycle Model: Harley Fat Bob
Other Motorcycle Year: 09
Reputation: 6160
el jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really niceel jinete fantasma is just really nice
Default

Quote:
Originally Posted by krono View Post
NOTE #2: never touch the hot exhaust :P :P :P
I think we've all learned that lesson the hard way.
Reply With Quote
Sponsored Links
  #10  
Old 1st July 2008
Retroboy's Avatar
Retroboy Retroboy is offline
Flat Track Racer
 
Join Date: Jan 2008
Location: Oslo, Bygdøy
Posts: 205
Sportster/Buell Model: XLH 1000
Sportster/Buell Year: 1981
Reputation: 1805
Retroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura aboutRetroboy has a spectacular aura about
Default

Just did something like that last week on my SE Street Performance pipes

There are about 3x5, 6 mm holes in the inner baffle and i increased it to 10 mm and added 6x5, 10 mm holes to a total of 9x5, 10 mm holes.

The sound is really cool and i think the sound is much better than the sound on my V&H Shortshots

I did not open the "flap" or cut the end of the inner baffle, and i wonder if this will make the sound even better!??

Retro....
__________________
1981 XLH 1000 with rigid frame from L&L Choppers
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Sponsored Links
All times are GMT +1. The time now is 14:26.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC