Ok guys, I've got my VE table honed in within 0.5%, and I'm sitting at 0.995% BEN all across the entire map. I spent a ton of time getting this right. I'm getting about 18 mpg (in a 2900 lb car) which isn't great from what I expected. I have been running in open loop speed density the entire time. I have a few questions.
1. What are my options for running closed loop in speed density? I'm thinking that I can still run closed loop fueling in speed density, correct me if I'm wrong.
2. When I return to closed loop, I konw I need to monitor trims. From my understanding the short term trim is basically a trim based upon 02 readings directly. The long term trim is learned from the trends in the short term trims. Eventually the short term trims will minimize as the long term trim steadys out. Again, correct me if I'm wrong. Now the question. Is the long term trim I'll be logging a single value, or is there a map of long term trims and I'll just be logging the trim from the particular part of the map that I'm operating in?
3. From some research it looks like the long term fuel trim is added to open loop operation, but if and only if the trim is positive (adding fuel). Correct me if I'm wrong.
4. I know I should be logging trims. Are there trims for each bank, like a short term for each bank, and a long term for each bank? What are their parameter names for an LS1? What other parameters should I pay attention to when I make the switch back to closed loop speed density.
5. Will this really be beneficial if my VE map is within 0.5% in the majority of cells?
Thanks in advance for the help and direction.