How far can I advance timing??

Depends on what the motor wants and what it will take before seeing knock. This is why a dyno is handy, as you can figure out MBT (Mean Best Torque)....you can also find MBT on Street tuning (sort of, really max Ign) by running it till you see knock. If you hit 30* and don't see knock that doesn't mean you're making more power. Also AFR plays a role with Timing, as certain AFR and Timing will make the best power. We at HalferLand Performance know the general timing figures but isn't something we share, as that would make it too easy for our competitors. If you need a full E-Tune...hit us up at HalferLand@Gmail.com Our reviews speak for themselves ;)