A lot of factors go into this like what motor? Cam? Initial+centrifical, et cetera..... I am running 10.69 with a 108 centerline and 302 @ .050 duration on 93 premium and no boost okay, but that is a hell of a lot of overlap in the cam. On a Viper or something higher end where you can't afford or don't want to buy, when in doubt, go with more octane unless you have a quiet exhaust and you can hear the ping easily. I could type on this thread's subject for hours alone, but you are a noob and you might be refering to your Civic and that I don't want to touch
Forced induction on a Viper with 91 octane?????????? PLEASE give me your VIN Arizona so I don't buy your Viper by mistake in the future...
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Now that the prices of virtually everything are going up and up and now that thousands of people are losing their jobs everyday as the US goverment still hands out 10,000+ checks to those people just getting off the boat, I think I will take a boat ride and get in line, I sure could use the money to pay for the gas in my Viper and GTO!
