any body familiar enough with z31 to know a sweet spot for timing??
well basic mods are
3" with 3" muffler (had to to help prevent being pulled over
3" high flow stainless steel (apc reworks)
heat wrapped headers
oil cooler prior to turbo
cooler stock plugs(back from nonresistor types from fear of the head gasket cause)
high performance plug wires (accell super stock)
new cap and rotor(also anybody know if putting a groove into rotor might help to prevent spark knock, as it would create a multi type spark)
and running 10 psi boost (external spring so no bleed off or boost loss)
160 degree thermostat
tricked comp to runn slightly richer(high temp fuel, so the comp thinks lol)
and rteligously running 93 with octane booster

so basicly all i want to knowe is if increased boost = retard or advanced?????? so any knowledge would be helpful

also any explanations of as to why i should retard or advance would also be appreciated so i can greater under stand this lovely creation of boost lol