octane and main jet

[sherminator]

Small help has comment of the type of gasoline(essence) has to use for the running(race) more I go(take) up the octane rating more I can lowered main jet and plays it really on the performance??? Any help would be appreciated well and ratio octan main jet and for around 15 celcius thanks!!!

[YAMMIEGOD 3:16]

I WOULD NOT DROP MAIN JETS ANY LOWER THAN 135 USEING RACE GAS. ALSO KEEP IN MIND. TO MUCH OCTANE CAN HURT YOU IF MOTOR IS STOCK. 3:16 )yammie tony)