Just out of currosity, What fuel are you running in your bike. I have an 01 F4i and have been using 93 octane which seems to be running good. I dont have the owners manual so if someone with an 01 could tell me if im not supposed to be running 93 please post it

 

Its made torun on Regular... but the Premium isn't a bad thing.

 

i run Shell 91, good gas, and contains no ethenol.....

 

premium

 

93

 

i run 93 if i can get it 91 if i cant..

my owners manual for my bike says to only run 91 octane or higher, and that running anything less could cause a knock.

 

premium.. is it sunoco that has the 94 octane? Reguardless.. I put the highest in

 

87, the bike is made to run on 87 pump octain, running anything higher is a waste of money and you are loosing power, not gaining it.

 

regular here. get about 45mpg around town and 35 on the highway and about 25 at the track. . .lol.. faster speed suck

 

where in the manual for an F4i does it say to run 91 octane gas?????
this topic has ben beaten to death...do a search.