Set it up on e85, if conveniently available locally, with gm sensor automatically detecting/switching for 91 and E85
Common on Lancer Evos Sent from my iPhone On Jul 27, 2010, at 5:53 PM, Geoff <[email protected]> wrote: > It's been a while since I've been boosted, I'm now a V8Roadster, but you > might want to give Flyin' Miata a ring up to see if something like > water/methanol injector would help. > > Geoff > '01 LS2 Stealth Option Delete > > On 7/27/2010 5:43 PM, [email protected] wrote: >> >> Hello, >> >> I have a 1.6l miata with what's supposedly an "FM2 race kit" installed. >> It boosts to 15psi easily but requires alot of timing retard to not >> knock at even 12psi on california's 91 octane. >> >> Recently I've started filling up with Sunoco 100 octane race gas. This >> has eliminated all knocking with the boost set to 12psi and the ignition >> timing advanced 1-2 degrees past the FM defaults in zones 4 and 5. >> >> It's making great power, but as is usual with these things, I want >> more, especially given how much I'm paying for the race gas. >> >> My question is what are the safe limits of boost and ignition advance >> one can run when there's enough octane to not knock? When do the rods >> and/or pistons give up on the stock 1.6l? >> >> The FM manual recommends not exceeding 180kpa on a stock motor, so that's >> why I'm running 12psi... but even with the timing advanced from the FM >> defaults there is plenty of retard in zone 5 relative to zone 4 and of >> course zone 3. >> >> Any input based on experience is greatly appreciated. With the power >> levels it's making on 100 octane I'm afraid to just keep bumping the >> advance and wait for knock to start again. I imagine it will either >> knock hard and break something, or not knock and instead bend a rod >> because I've exceeded the mechanical limits of the stock bottom end. >> >> Regards, >> Vito Caputo >> _______________________________________________ >> Miatapower mailing list >> [email protected] >> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >> ---------------------------------------------------- >> This message has been processed by Firetrust Benign. >> > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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