Engineermike, thanks for the response. I'm pretty sure I need to re-read this about 100 more times before I can digest everything! Thanks for all this information.
Also, I am still very much learning both HP tuners as well as how Ford applies their logic, I tuned the ford diesels up to 2008 and then stopped, so I'm about a decade behind the curve and trying really hard to catch up.
First off, I didn't realize my ETC Feedback loop had been disabled, is this the "Tip In Mgmt" switch? I don't have a "feedback control" listed as an option.
Second, I was following a few of murfie's posts talking about how the SD is good to have set right as it covers the vehicle performance in the transients. Using his approach,
- I wrote math that would use the "calculated" MAP and air intake temp to generate an air density, i could then calculate the amount of air consumed per intake event.
- Using the MAF sensor with a known flow, i could calculate the amount of air actually consumed per intake event.
- These 2 numbers are the final result of the volumetric efficiency calculation, so the error between these 2 numbers should represent the error in my Speed Density Chart since the speed density calculator appears to be a "standard" VE table with MAP on the Y and RPM on the X and the VE listed at their intersection.
- I would take that error and multiply the matching sell in the SD table by that percent error to bring them into alignment.
Maybe I completely butchered his approach, maybe my refresh rate is too slow which you pointed out, or maybe this actually has 0 impact on how the truck runs and I'm only creating problems for myself
. I will revert back to the stock SD values and see if that helps clear things up.
I was reading the desired airmass, as it is the the inverse in the Torque Model tables, and then using the spreadsheet murfie provide the values for the torque tables. But now i think I'm seeing that desired airmass is not reading fast enough which is why i probably have some errors in this modeling too. I'll see if my data changes significantly with an updated refresh rate.
Thanks for all the help.
I will do some more research on the speed density tables to understand how i make the transition from one table to the other better.
I will turn my Tip In Mgmt back on which may help.
I will update the refresh rate of my Desired Air PID
If anyone has any additional thoughts or can point me to some posts that may help I am here to learn.