Goldfinger911
October 8th, 2007, 03:14 PM
I was doing some fine tuning of Desired Airflow and VE on my cammed 2002 LS1 yesterday. I made note of what my load was at idle. Then I was using the the LS1 Control panel bi-dir and forcing different timing advances at idle.
I noticed that when my timing dropped, load went up. And then the opposite when I went back to 23 degrees (where I started from) which produces a load of right at 50kPa.
I stopped playing and finished RAFIG. Then changed idle timing and did RAFIG again for Desired Airflow. The isle lead was higher and all of my Desired Airflow Numbers went up (positive numbers in the map.)
My question; would it make sense that optimal timing for a given cam be the advance which produces the least amount of load at idle? Everyone is always trying to improve idle with cammed cars and was wondering if this logic holds true? Wouldnt that indicate that the timing advance than produces the least load, is the one that is producing the highest efficiency at that given RPM, IAC position, etc?
If this is a totally dumb question, oh well. :)
I noticed that when my timing dropped, load went up. And then the opposite when I went back to 23 degrees (where I started from) which produces a load of right at 50kPa.
I stopped playing and finished RAFIG. Then changed idle timing and did RAFIG again for Desired Airflow. The isle lead was higher and all of my Desired Airflow Numbers went up (positive numbers in the map.)
My question; would it make sense that optimal timing for a given cam be the advance which produces the least amount of load at idle? Everyone is always trying to improve idle with cammed cars and was wondering if this logic holds true? Wouldnt that indicate that the timing advance than produces the least load, is the one that is producing the highest efficiency at that given RPM, IAC position, etc?
If this is a totally dumb question, oh well. :)