Higher Octane????
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Novice
Joined: Jan 2009
Posts: 18
Likes: 4
From: Connecticut
Higher Octane????
Ive always run regular unleaded gas 89 octane in my bikes.
This weekend i filled up with 93 octane Super unleaded.
After about 10min & the old gas was out of the system
I could immediately notice a significant difference in how the bike ran.
its an 2003 88" FXSTFI ( Fuel injected FatBoy) 23,000miles
More power, sounded better..
I cannot belive what a different it made!!
Has anyone else ever noticed anything like this...?
This weekend i filled up with 93 octane Super unleaded.
After about 10min & the old gas was out of the system
I could immediately notice a significant difference in how the bike ran.
its an 2003 88" FXSTFI ( Fuel injected FatBoy) 23,000miles
More power, sounded better..
I cannot belive what a different it made!!
Has anyone else ever noticed anything like this...?
Seasoned HDF Member
Joined: Nov 2006
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From: East Coast, USA
Seasoned HDF Member
Joined: May 2012
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From: Carlsbad, CA
If your bike has anti knows control, whrn it detects precognition it retards the spark to reduce the ping. This then reduces performance. Add octane , less ping, less spark retard, and better performance.
Octane does not add performance, it enables it. In actuality, the additive can slightly reduce btus.
Octane does not add performance, it enables it. In actuality, the additive can slightly reduce btus.
Tourer
Joined: Jan 2010
Posts: 296
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From: Heart of Dixie
18 SGS,107 pretty much stock, mufflers and a stock improved tune with PV. I don't do a bunch of mileage checking but on a recent run to NC burning 93% & Ethyl I got 48 MPG, Filled up when we headed home with 93% real gas, 51 MPG. That seems like to much mileage maybe to lean. It shore did seem to purr.
Seasoned HDF Member
Joined: Feb 2013
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From: New York
The saving between the price of regular and premium gas on a 5 or 6 gallon tank is only a few bucks.
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Seasoned HDF Member
Joined: May 2012
Posts: 32,934
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From: Carlsbad, CA
No,,,it ignites at a higher temperature. Therefore it resists pre-ignition.
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Seasoned HDF Member
Joined: Nov 2004
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From: Ottawa, CANADA
18 SGS,107 pretty much stock, mufflers and a stock improved tune with PV. I don't do a bunch of mileage checking but on a recent run to NC burning 93% & Ethyl I got 48 MPG, Filled up when we headed home with 93% real gas, 51 MPG. That seems like to much mileage maybe to lean. It shore did seem to purr.
Cheers!
Seasoned HDF Member
Joined: May 2008
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From: South Carolina
Pre-Ignition is caused by a hot spot in the combustion chamber, and will cause ignition of the fuel air mixture before the spark, in a worst case scenario the ignition could occur just as the piston starts traveling upward on the compression stroke.
Pre-Ignition will destroy and engine in no time at all.
Detonation is when a combustion cycle starts away from the spark plug, but after the spark has occurred.