i notice when my h\c car (a4) is in park or netural (and not moving) that occasionally when i blip the throddle they sometimes hang arround 2000rpms for a few secconds.. if i put the car in gear or hit the throddle again it seems to fix the problem but its still annoying.. any advise?

 

Follower decay and delay are your culprits, easily tuned out.

 

but i have the cracker diasbled until the car is over 5 mph

 

cracker and follower are seperate tables.

 

I believe ringram is referring to throttle follower and throttle follower decay - not throttle cracker.

 

then there lies the problem i guess.. thanks guys

 

i thought the cracker was a table to allow more air in to the engine while the delay and decay were telling the pcm how and when to reduce the values found in the cracker table .. therefore if the cracker is diasbled what would be the point of messing with the decay tables

 

look at their definitions....they are completely different and function separately. Throttle Follower functions as commanded by the table (see table) - even at rest.

 

from EFILive:

Throttle Follower Airflow -
Airflow values added to idle airflow when the throttle follower function is active.
This value is multiplied by {B4316} "Throttle Follower Airflow RPM Multiplier" to obtain the final throttle follower airflow value.

If both the throttle cracker airflow and the throttle follower airflow are non zero, then the sum of both airflows is added to the idle airflow.





Throttle Cracker Airflow-
Airflow values added to idle airflow when the throttle cracker function is active and the transmission is in gear.

If both the throttle cracker airflow and the throttle follower airflow are non zero, then the sum of both airflows is added to the idle airflow.

 

RAF or Desired Airflow -

Used to reduce airflow as the engine warms up.
Although listed in the "Idle" section, this calibration also controls the base airflow for non-idle conditions.

 

Back in October 2003 you told me about Century Trans.. they were good to call,,, give them a shot!

 

Thanks But Im Sure This Is A Tuning Issue Not A Tranny Issue.. Supprisngly My Tranny Has Held Up Fine Even With Stock Internals And 530 Hp.. But On A Side Not I Have Been Looking Into Their Trannys Because I Know Im Limited In The Life Of My Stock Tranny At This Power Levle