anyone ever use race fuel?

Placebo effect.

The only way the engine would be faster is if it was modified to take advantage of the higher octane (such as raising compression or advancing the ignition timing).

(in a Brooklyn accent)
You callin me a liar?

Most every weekend.

Weather conditions can play a big part on how much power a given engine will make. Look up SAE-J1349.

Only real way to know what gains (or losses) the fuel would have is to have a controlled way to measure it. SAE corrected dyno.

For a stock GS motor I don't see the point. They were designed for low grade fuel. Race type fuels could actually hurt the performance. There a many types of it. I learned the hard way that even fuels with the same specs made by two different companies do not always burn the same.

If you want more power, I suggest getting a bigger bike.

[Nessism]

I say this because we filled up my friend's single cylinder, naturally aspirated ATV with premium after having it run regular until that point. It was noticeably faster. Before you yell placebo effect, I wasn't told it was premium until after I rode it.

Placebo effect.

The only way the engine would be faster is if it was modified to take advantage of the higher octane (such as raising compression or advancing the ignition timing).

I say this because we filled up my friend's single cylinder, naturally aspirated ATV with premium after having it run regular until that point. It was noticeably faster. Before you yell placebo effect, I wasn't told it was premium until after I rode it.

[first timer]

the only race fuel that might make a differance would be some of that oxygenated stuff, that you have to buy in 5 gallon metel barrels.

http://www.vpracingfuels.com/index2.html

other wise don't waste your money for street riding.

check out this thread for some octane discussion. http://www.thegsresources.com/_forum...d.php?t=113139

I was wondering if anyone's ever tried filling their bike up with race fuel. If you don't know what I mean, it's the 100+ octane stuff that costs almost twice what regular gas does. There's only two stations that I know of in a 50 mile radius that have it. I know it has lead in it and they say you can't use it in modern cars because of the catalytic converter, but since our bikes don't have one, would it be harmful or beneficial? I wasn't thinking of making a regular habit of filling up with it, just maybe once or twice.