What kind of fuel works for maximum horsepower?

[OB_Carroll Performance Works]

we run C-12 VP fuel in just about everything with a very noticeable difference.

 

[OB_LATEBRAKR]

CAM2 WORKS VERY GOOD FOR ME AND I BUY IT AT THE PUMP.

 

[OB_DRAGBIKE_dot_COM]

Anybody try different fuels yet on a stock engine?

 

[OB_YZFR1]

I ran back to back dyno tests on a stock R1 with an exhaust system between 91 octane pump gas and Phillips B-32 leaded race fuel. Results were idendentical, 145.0 hp on each test. The only difference I felt while riding was a very slight off idle stumble with the race gas.