Screamin Eagle CVO Models All CVO Bikes 1999 thru present.

octain boost

Thread Tools
 
Search this Thread
 
Old Aug 11, 2010 | 07:29 PM
  #1  
jimcb1's Avatar
jimcb1
Thread Starter
|
Advanced
15 Year Member
Joined: Jun 2008
Posts: 54
Likes: 0
From: dunmore pa
Default octain boost

does anybody use octain boost, if so what kind for 2010 ultra cvo
 
Reply
Old Aug 11, 2010 | 07:33 PM
  #2  
bluesmanjesse's Avatar
bluesmanjesse
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2010
Posts: 693
Likes: 98
From: Somerville OH
Default

Why do you want to run octane boost?
 
Reply
Old Aug 11, 2010 | 07:41 PM
  #3  
xxxflhrci's Avatar
xxxflhrci
Extreme HDF Member
Joined: Sep 2006
Posts: 10,033
Likes: 29
Default

You shouldn't need it....However, I'm sure you know how the numbers rating for octane boosts works, don't you?.....If the bottle says it raise your octane 5 points, that means it will make 87 gas 87.5, not 93.
 
Reply
Old Aug 11, 2010 | 07:45 PM
  #4  
smitty901's Avatar
smitty901
Seasoned HDF Member
Veteran: Army
15 Year Member
Liked
Community Favorite
Joined: Feb 2008
Posts: 22,999
Likes: 11,439
Default

Worthless snake oil.
You can get 91-93 almost anywhere that is all you Hd needs anymore is a waste of money.
Higher Octane fuels burn slower not better they are used in Higher compression engines to help prevent fuel from fire to soon of fuel.
Higher compression starts at 10:1
 
Reply
Old Aug 11, 2010 | 08:05 PM
  #5  
bluesmanjesse's Avatar
bluesmanjesse
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2010
Posts: 693
Likes: 98
From: Somerville OH
Default

Exactly there's no more boom in 93 than there is in 87,just more additives to prevent premature detonation in higher compression engines(there more to it but that's the easy explanation)
 
Reply
Old Aug 16, 2010 | 10:12 PM
  #6  
SKYCLIMBER's Avatar
SKYCLIMBER
Tourer
Joined: Apr 2008
Posts: 278
Likes: 0
From: HOUSTON, REPUBLIC OF TEXAS
Default

I would be afraid of burning the valves.
 
Reply
Old Oct 4, 2010 | 09:35 AM
  #7  
mikebehr00's Avatar
mikebehr00
Cruiser
10 Year Member
Liked
Loved
Joined: Sep 2010
Posts: 131
Likes: 20
From: iowa
Default

No I did not know that's how it works. I've got mostly 87 octane and have to search for 91. I recently have had starting and idleing problems and was going to see if octane boost would help. What do you think?
 
Reply
Old Oct 4, 2010 | 10:56 AM
  #8  
dope_man_21's Avatar
dope_man_21
Ultimate HDF Member
Joined: Nov 2007
Posts: 6,799
Likes: 8
From: Carrollton, Georgia
Default

If it is a 2010 and you are having any problems you should have it checked out, adding a fuel additive is not the answer, you are just prolonging it.
On a side note, I added some to a truck I had in 1993 ended up causing the plugs to burn and the O2 sensors failed, costly mistake on my behalf to learn a valuable lesson.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Oct 4, 2010 | 05:25 PM
  #9  
peppi's Avatar
peppi
Road Captain
Joined: Nov 2005
Posts: 720
Likes: 6
Default

Octane booster isn't needed in most street ridden bikes unless you upped the CR to over 10-1. Most any fuel with an octane of 93 will run these bikes without a problem. The pinging in the newer bikes comes from an EPA lean mixture. If you add some fuel they run much better without the ping.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Nat_Asp_Mike
Exhaust System Topics
3
Mar 12, 2011 06:55 AM
Bob99
Sportster Models
6
Sep 21, 2009 09:15 AM
ubreal
Ignition/Tuner/ECM/Fuel Injection
8
Sep 21, 2007 07:27 AM
jbnl163
General Harley Davidson Chat
3
Mar 30, 2007 01:02 AM
ESS9
Exhaust System Topics
9
Mar 8, 2006 01:44 PM




All times are GMT -5. The time now is 08:07 AM.

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