markowinnipeg
Well-Known Member
markowinnipeg,
Did the mods from Ivan alter ignition timing or change the engines compression ratio??? Certainly a Jet kit and an exhaust pipe should have no effect on the octane requirements of your bike. . .
On the East coast of the US (and probably for much of the US) it is nearly impossible to find street gas without ethanol in it, regardless of octane. Gas mileage definitely suffers a bit with 10% E. The stock FZ1 is designed to run on 87 octane gas so unless you like wasting money, there is no reason to use anything else.
That said, my particular setup uses the Dynojet ignition module to alter ignition timing from stock and according to Ivan (whose ignition "map" it is) is optimized for mid grade gas.
Maybe I am just having bad luck with 87 ethanol fuel around here but there is a difference. Bike would run rough and hesitate, then I would run some sea foam though it and go back to 91 and runs fine. On my sled 2008 Yamaha Nytro you can tell the difference with the sled running better on 87.
I will give it another shot and let you know.
Honestly with the ethanol it was like running a bike with sprak plugs that are on their last legs.