Super unleaded

[balls]

Put this in by mistake the other day it does not like it at all anybody else tried this stuff

[warby221]

STD petrol’s 95 Ron
Supers 98 Ron
Super in your bike not a problem it's just got a higher octane rating
If you were using it all the time you could advance your ignition and run a higher compression ratio without it pre-detonating

[seb421]

i often run the bike on this and it runs a lot better than the standad texaco sh1t i have filled up with

[pariah]

I only use this stuff in my bike. Found it runs better and gets more mileage from it. I know it cost more but worth it in my opinion.
On the odd occasion I have had to use the poor mans fuel and found that she dont like it, coughs and splutters .

[tony.mon]

Just read the report in Bike magazine where they tried regular, super and racing fuel in a couple of bikes then dyno'd them- no difference.

Save your money.

[Zakalwe]

Unless the bike is a Beemer (some of them use the knock sensor to restrict power if low-octane stuff is used), is running high compression (or a turbo with big boost) or is tuned then a higher octane rating wont make any difference at all.

If you reckon your bike is running better or getting higher mileage then it is probably a "placebo" effect (have you had it dyno'd? Or run it dry, then did a fixed load run with a measured amount of fuel?).

[pariah]

I,ve done nothing to it. The only thing that has changed is a K&N filter fitted free by my mechanic.
Honestly, I can notice the difference with the better quality fuel. Like I said , She coughs and farts with the lower grade fuel in Plus the mileage is a lot better.
My parents live in lincolnshire and it,s a fair old treck about 300 mile all round , but using this fue I can get across there on one tank full and just fill up again when returning.

[Zakalwe]

I,ve done nothing to it. The only thing that has changed is a K&N filter fitted free by my mechanic.
Honestly, I can notice the difference with the better quality fuel. Like I said , She coughs and farts with the lower grade fuel in Plus the mileage is a lot better.
My parents live in lincolnshire and it,s a fair old treck about 300 mile all round , but using this fue I can get across there on one tank full and just fill up again when returning.

Not having a go, but that's hardly an empirical test?

A higher octane number means that the fuel is more resistant to knocking (pre-ignition), that's all. This means that the fuel can sustain higher compression or a leaner mix without pre-igniting. On a fuel injected bike, with a closed-loop system (ie one which can sense the exhaust gases and has knock sensors) the FI system can run the bike a tad leaner (or adjust the ignition curve), which would give a slight increase in MPG. On a carbed bike, on a low state of tune like a Firestorm??? I cant see it myself.

How could the bike "know" that the fuel is a higher octane, and adjust the fuelling to suit?

Does the Firestorm have knock sensors and an ECU that would adjust the ignition?

[sirch345]

On the odd occasion I have had to use the poor mans fuel and found that she dont like it, coughs and splutters .

Not wishing to sound like I'm getting at you Pariah, but I begrudge paying £5.10 plus for a gallon of the poor man's fuel, let alone paying extra for Super.

I,ve done nothing to it. The only thing that has changed is a K&N filter fitted free by my mechanic.
Honestly, I can notice the difference with the better quality fuel. Like I said , She coughs and farts with the lower grade fuel in Plus the mileage is a lot better.
My parents live in lincolnshire and it,s a fair old treck about 300 mile all round , but using this fue I can get across there on one tank full and just fill up again when returning.

Pariah,
My 2p worth. The more MPG is most likely down to the K and N air filter and not the petrol. The K&N filter is more free flowing than the standard air filter so the bike will be getting more air in the petrol and air mix. Therefore using less petrol per mile.

I hope your mechanic (who fitted the K&N filter) has set the carbs up properly, as if it's too lean a mix you could in time have some burnt valves.

Chris.