Hi friends! I am "young" HPt tuner.
Could you explain me, when ECM work using for Spark manage Hi Octane table values, and when Low Octane table for spark advance? There have not a Switch to direct choose Hi or Low in the soft. Is it ECM primarily put to use Hi Octane table, and if more knocks occured,ECM swithcing to Low octane table use? Or other rule?
Yesterday, i tuned Escalade EXT 2007, 6.2l and used Diablo Tune values for Hi octane Spark table only (Low octane was not changing). This car owner use 87 octane only and at once after flashing i get log. There have stable knock retards up to 15. I'll check again in a few days and it will be interesting to see whether changes to the knocks? What do you think?