Thanks!
Thanks!
Bumping this thread from awhile ago with an update. Set up a hybrid tune. OL idle below 1200rpms and closed loop above that. When the setup went closed loop it was leaning out the cruise AFR to mid15s to 16. I logged o2 switch points and CL mode and went back and adjusted the switch points to what the log said and it's better now. Still a little lean, low 15s, but it's cruise so not bad. I found a couple links on tech that helped me out. I may still try raising the switch points more and see if it helps even more.
https://ls1tech.com/forums/pcm-diagn...osed-loop.html
https://ls1tech.com/forums/pcm-diagn...low-modes.html
The only thing I haven't figured out is the fuel trims only pull fuel they never go positive which seems odd to me.
Tune attached. Ignore the MAF table, its maxed on a scaled tune and I need to move to an LS7 MAF to get more range.
295-50-16 TIRE-LATEST5- 4 inch pulley CLOSED LOOP MAF ONLY_02os knock tables_......trans pressur.ctz
Anybody see anything that would cause this?
I think I had it like that before adjusting and the fuel trims we're WAY off and it was pulling a bunch of fuel running lean. As part of scaling the tune I also scaled the closed loop mode table which shifts airflow to numerically lower closed loop modes. Would this have any impact?
Try setting the CL mode table back to stock to see what happens.