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I know forced induction motor should have retarded timing if any timing ajustments are made. to far advanced under boost and you get detination., normally people just run a higher octane to compensate, rather than get a spark box with a boost retard, or retarding the timing all togther.
I haven't posted this link in a while, maybe your dad would like to read up....
http://streetmachinesoftablerock.com...topic.php?t=81
saved it in my favorites, thanks Tech. I'll print it for him when I get ink for the printer
Well weiand recomends no more then 12 degrees advance at idle for sea level im running 18 degrees at 6,000 ft above sea level which is like running 8 degrees .
They told me to keep it at 8 - 12 degrees untill about 2,400 rpm then have full advance by 3 grand which mine does as i changed the advance curve springs myself with a total of 38 degrees for me .
Im also having to run a 10 pound boost pulley just to get 8 pounds of boost up here and its a blast i must say .