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The octane rating is achieved by adding chemicals to increase the (say it with me) re-sis-tance to ig-ni-tion.... Bottom line, you will get the best performance using the lowest octane rating that does not cause pinging.



I don't doubt you, as I'm learning new things, but I know my old hot rod ran a little quicker with a couple mothballs in the tank (it kept cats from sleeping on the roof, too).

2002 Bandit 1200/ GSXR cams/ 1277 BB Kit/ Holeshot header and can/ 38mm flatslides/ a good head/lotsa hp/lotsa tq- lots of rear tires...