Originally Posted by
ippielb
I will most definitely go through all the tutorials again, it's been a while since i played with my gas tuning. Got a duramax and been focusing on it lately.
I did not disconnect the post cats 02 sensors in that log, i will keep the same tune on and then unplug them and do another log to see if any changes are made to my fueling.
I agree that fueling issues are at idle and low rpm, you can tell just by sitting in the truck.
Edit:
Looking at the spark for stock vs my tune for low octane, i kept it pretty conservative, but i am going to set the low octane spark table back to stock and see if that changes anything.