Okay, I have Russ' Idle Config. downloaded. Did that a few months ago. My question is: how do you get all three in line? I would imagine that each one would affect the others. Which do you do first? If I had to guess, I would say: get the IAC down where it needs to be, get the idle spark set a little less than most vacuum, then run the airflow config. to get that squared away. Is this correct? Thanks for any help.
Bump for help.
get your idle right then give it the airflow the car needs. If the IAC is still high, adjust that and then redo the idle airflow.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
Regarding the IAC, what do you consider "high" and how do I modify how my IAC is acting? Remember in my other thread, my IAC was at 185 on cold starts.Originally Posted by WS6FirebirdTA00
2012 Chevy Cruze A6 1LT RS
Formerly - 2004 GTO, 2002 Z28, 2007 Colorado, 2008 Silverado
I do not like to see the IAC much higher than around 60-70 when hot, but normally shoot for 30-50.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
Okay, thanks. Got another question for you, how do you know when fueling is correct at idle. Not suppose to use the wideband, so what's the best method?
Not suppose to use the wideband? You need the WB to dial in your fueling.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
I think he's playing off the fact that people say the "wideband is never accurate at idle" which is untrue from my findings. When I'm idling my wideband is reading 14.3 to 15.0 which averages to about 14.6 which is right on the money.
However, sometimes idle readings on the wideband ARE incorrect, but not always.
2012 Chevy Cruze A6 1LT RS
Formerly - 2004 GTO, 2002 Z28, 2007 Colorado, 2008 Silverado
unless you have one of those $10,000 units, the wideband is the best you can get, which it is not bad at all. As long as the car is not running like crap, the numbers should be good.
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
Okay, then that helps out a whole bunch then. Another question, when I'm trying to find the sweet spot with the spark at idle in the controls; I get surge in the idle. Even on the setting that it is idling smooth at before clicking on the absolute spark. What is the cause of that? I'm trying to learn and there is a lot to take in, so be gentle!
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