Which fuel
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Windy
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Re: Which fuel
Cheers. I was just looking for which people would recommend? Does the bike respond well to premium or not? In my experience some vehicles thrive on it and some don't.
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David.
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Re: Which fuel
Most of the time, I use Tesco Momentum 99 (E5). IMO, it's unlikely you'll feel any performance difference but may see better MPG. Then there is the debate between supermarket fuel and branded (E5 or E10).
Some further discussion in this Fuel Grade thread, viewtopic.php?t=1252&hilit=fuel+grade
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Steve398
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Re: Which fuel
I used the posh stuff until the prices went crazy then I went to standard, tbh I don’t notice the difference other than at the till!
Cum Dubito Desisto
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Stu
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Re: Which fuel
Run on normal E10
Your bike needs to be tuned to 99 octane fuel to get the best out of it
I have used both and can tell no difference
Your bike needs to be tuned to 99 octane fuel to get the best out of it
I have used both and can tell no difference
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David.
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Stu
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Re: Which fuel
A full tank f high octane fuel and a day on a dyno and someone tweaking the fuel maps and timing to get the best out of the fuel and bike
But for our bikes it's not worth it as the gains for road use are not really seen
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David.
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Re: Which fuel
Just dug out some guidelines I was given before taking my Camhead to be remapped.
"Super unleaded fuel - unless your bike's manual specifies that the engine will give maximum performance on super unleaded, there is no benefit to filling up with super unleaded before your visit. We tune to standard 95RON fuel as it's commonly avialble. That doesn't mean you shouldn't use super unleaded where possible, as it often has other benefits such as better detergents and less ethanol than standard fuel, but you won't get more power with our tune from doing so."
Other engine tuners may have a different opinion.
AFAIK, octane rating is determined by the engine compression ratio and doesn't enhance performance. However, using a lower than specified octane ratio may cause pre-ignition/pinking. Modern bikes have anti-knock sensors, hence the Camhead and Hexhead being capable of running on lower octane fuel.
"Super unleaded fuel - unless your bike's manual specifies that the engine will give maximum performance on super unleaded, there is no benefit to filling up with super unleaded before your visit. We tune to standard 95RON fuel as it's commonly avialble. That doesn't mean you shouldn't use super unleaded where possible, as it often has other benefits such as better detergents and less ethanol than standard fuel, but you won't get more power with our tune from doing so."
Other engine tuners may have a different opinion.
AFAIK, octane rating is determined by the engine compression ratio and doesn't enhance performance. However, using a lower than specified octane ratio may cause pre-ignition/pinking. Modern bikes have anti-knock sensors, hence the Camhead and Hexhead being capable of running on lower octane fuel.