Here in the Denver area we have the pleasure of dealing with oxygenated fuel fall/winter/early spring. The bike always runs a little rougher during these times, we won't get "good" fuel probably until the end of May/early June.
I tried Amsoil Quickshot SE for the first time recently. I'm on my second tank with it and I "perceive" it to be effective. The Sporty seems to start quicker, idle better & have a better throttle response going by the seat of the pants method of testing, LOL.
I don't know, maybe it's "mind over matter" and I'm imagining it, but for the $10 I spent on the bottle, still have 1-2 more doses left, I guess I'll try it again next year.
Anyone else have experience with this stuff on their carbed bikes (don't have an issue with my cars/trucks & bikes that have/had efi)?