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Todays efforts,, ;) Longer drive file

awesome,,,, thank you,,, I'll look into a few things. Learning as I go. I have bumped the timing in the low octane part, about 2 points at first,, then have been adjusting them via the knock table,...

forgot tune file,,

2004 Tahoe been playing with tuner for a few weeks.

It's all stock with 208k miles rebuilt trans and a fresh tune up. Everything is reading good did replace 1 o2 sensor for heater circuit....