User Tools

Site Tools


quickieafsetup

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision Both sides next revision
quickieafsetup [2010/02/08 08:19]
twdorris
quickieafsetup [2010/02/08 08:19]
twdorris
Line 18: Line 18:
  
 Knowledge of this fundamental concept is __**key**__ to understanding everything else below. Knowledge of this fundamental concept is __**key**__ to understanding everything else below.
 +
  
 ===== Idle ===== ===== Idle =====
Line 26: Line 27:
 If fuel trim at idle is not where I want it, I either use the lower airflow sliders (log ''​MAFRaw''​ to see where to make adjustments) or I use deadtime to tweak things. ​ If I'm running SD, I'll use the SD VE table instead of the airflow sliders. If fuel trim at idle is not where I want it, I either use the lower airflow sliders (log ''​MAFRaw''​ to see where to make adjustments) or I use deadtime to tweak things. ​ If I'm running SD, I'll use the SD VE table instead of the airflow sliders.
  
-Whether I make changes to airflow/VE or deadtime usually depends on whether ''​AirflowPerRev''​ is inline or not. If ''​AirflowPerRev''​ is off from the expected value in the opposite direction from ''​CombinedFT'',​ then I adjust the lower airflow sliders more than deadtime. ​ If ''​AirflowPerRev''​ is around what I'd expect, I might focus on deadtime instead for idle fuel trim adjustments. Just keep an ear out for little misfires at idle that can sometimes be introduced with deadtime adjustments,​ particularly if the injectors are not well matched at low pulsewidth.+Whether I make changes to airflow or deadtime usually depends on whether ''​AirflowPerRev''​ is inline or not. If ''​AirflowPerRev''​ is off from the expected value in the opposite direction from ''​CombinedFT'',​ then I adjust the lower airflow sliders more than deadtime. 
 + 
 +If ''​AirflowPerRev''​ is around what I'd expect, I might focus on deadtime instead for idle fuel trim adjustments. Just keep an ear out for little misfires at idle that can sometimes be introduced with deadtime adjustments,​ particularly if the injectors are not well matched at low pulsewidth.
  
 ===== Cruise ===== ===== Cruise =====
quickieafsetup.txt · Last modified: 2024/03/15 11:16 (external edit)