champion221elite
Super Member
After reading a fuel thread about a week ago, I decided to try running some Premium Unleaded fuel (92 octane) in my 2008 FZ6.
My bike is a 2008 model and is completely bone stock. No aftermarket air filters, exhaust systems, PC III and so on. I'm at 4700 miles and have been previously running Regular Unleaded fuel (87 Octane) since I bought the bike in August of 2008.
I ran the tank down to nearly the bottom and then topped off with almost 4 gallons of Shell brand 92 octane. After riding for several miles I got into some twisty stuff and noticed the acceleration felt "mushy". The engine was still running fine, however it seemed to lack the "snappy" feel in which I'm used to. Upon stopping at a rural 4 way intersection I noted there wasn't a soul to be seen, so I did a wide open throttle acceleration test. I banged through the gears as I normally would, but again, the acceleration felt a bit sluggish.
I know that a "butt dyno" assessment is a bit subjective, but has anybody else noticed slower than usual acceleration while running Premium fuel? I'm planning on burning this tank of fuel and then going back to 87 octane to see if there's any difference in the "seat of the pants" acceleration. I figured the FZ6 had significantly high enough compression, and a high enough red line to at least try premium fuel. Perhaps the Yamaha engineers truly did design the FZ6 to run perfectly fine on Regular unleaded fuel.
Any thoughts guys and gals?
My bike is a 2008 model and is completely bone stock. No aftermarket air filters, exhaust systems, PC III and so on. I'm at 4700 miles and have been previously running Regular Unleaded fuel (87 Octane) since I bought the bike in August of 2008.
I ran the tank down to nearly the bottom and then topped off with almost 4 gallons of Shell brand 92 octane. After riding for several miles I got into some twisty stuff and noticed the acceleration felt "mushy". The engine was still running fine, however it seemed to lack the "snappy" feel in which I'm used to. Upon stopping at a rural 4 way intersection I noted there wasn't a soul to be seen, so I did a wide open throttle acceleration test. I banged through the gears as I normally would, but again, the acceleration felt a bit sluggish.
I know that a "butt dyno" assessment is a bit subjective, but has anybody else noticed slower than usual acceleration while running Premium fuel? I'm planning on burning this tank of fuel and then going back to 87 octane to see if there's any difference in the "seat of the pants" acceleration. I figured the FZ6 had significantly high enough compression, and a high enough red line to at least try premium fuel. Perhaps the Yamaha engineers truly did design the FZ6 to run perfectly fine on Regular unleaded fuel.
Any thoughts guys and gals?