Running out of ideas on this cold surging. Please help.
Running out of ideas on this cold surging. Please help. So far:
I've dialed in my VE tables and MAF table with a wideband.
I've leaned out my Open Loop F/A tables so I'm only running 13-13.5:1 durring cold starts.
I've dialed in my RAF tables and Park Position Airflow tables so that my LTIT's are zero and STIT's are always less than +/- 0.5.
I've dialed in my IAC Effective Area table so Desired Idle Airflow and Dynamic Airflow overlap near perfectly.
I've tried a million different timing advance combinations.
I'm not sure what to try next. I just wish I could slow down the rate at which the IAC moves...seems like it keeps overshooting its target. I dunno
And it only seems to do it for the first minute or so.
If someone's figured this out, or has some more ideas, I'm open to suggestions.
Thanks.
I've dialed in my VE tables and MAF table with a wideband.
I've leaned out my Open Loop F/A tables so I'm only running 13-13.5:1 durring cold starts.
I've dialed in my RAF tables and Park Position Airflow tables so that my LTIT's are zero and STIT's are always less than +/- 0.5.
I've dialed in my IAC Effective Area table so Desired Idle Airflow and Dynamic Airflow overlap near perfectly.
I've tried a million different timing advance combinations.
I'm not sure what to try next. I just wish I could slow down the rate at which the IAC moves...seems like it keeps overshooting its target. I dunno
And it only seems to do it for the first minute or so.
If someone's figured this out, or has some more ideas, I'm open to suggestions.
Thanks.
A/f
Originally Posted by V-10 Killer
So far:
I've dialed in my VE tables and MAF table with a wideband.
I've leaned out my Open Loop F/A tables so I'm only running 13-13.5:1 durring cold starts.
I've dialed in my RAF tables and Park Position Airflow tables so that my LTIT's are zero and STIT's are always less than +/- 0.5.
I've dialed in my IAC Effective Area table so Desired Idle Airflow and Dynamic Airflow overlap near perfectly.
I've tried a million different timing advance combinations.
I'm not sure what to try next. I just wish I could slow down the rate at which the IAC moves...seems like it keeps overshooting its target. I dunno
And it only seems to do it for the first minute or so.
If someone's figured this out, or has some more ideas, I'm open to suggestions.
Thanks.
I've dialed in my VE tables and MAF table with a wideband.
I've leaned out my Open Loop F/A tables so I'm only running 13-13.5:1 durring cold starts.
I've dialed in my RAF tables and Park Position Airflow tables so that my LTIT's are zero and STIT's are always less than +/- 0.5.
I've dialed in my IAC Effective Area table so Desired Idle Airflow and Dynamic Airflow overlap near perfectly.
I've tried a million different timing advance combinations.
I'm not sure what to try next. I just wish I could slow down the rate at which the IAC moves...seems like it keeps overshooting its target. I dunno
And it only seems to do it for the first minute or so.
If someone's figured this out, or has some more ideas, I'm open to suggestions.
Thanks.
Moehorsepower.
my car did this when it was running 10:1 a/f on start up. thats not the problem. its most likely the amount of timing that is being pulled out of the car. try to take the multiplier for the start up spark correction down in the cells that its at 1.0 down to 0.75 or 0.50, thats where i have mine and it fixed it on cold 40* start, at 30* its messed up still but its only 0.75 so i have to go lower. 0.45 worked for me, do this now becuase it will work lol (at least i hope it will like it did mine and checkmate's, he told me about this)
Originally Posted by WS6FirebirdTA00
my car did this when it was running 10:1 a/f on start up. thats not the problem. its most likely the amount of timing that is being pulled out of the car. try to take the multiplier for the start up spark correction down in the cells that its at 1.0 down to 0.75 or 0.50, thats where i have mine and it fixed it on cold 40* start, at 30* its messed up still but its only 0.75 so i have to go lower. 0.45 worked for me, do this now becuase it will work lol (at least i hope it will like it did mine and checkmate's, he told me about this)
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Joined: Jun 2005
Posts: 4
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From: UAE
Hi to all just i have question if any one can help me , i have camaro Z28 2002 model and it A4 transmission ,I chang the cam to :
Advertised Duration: 269 int./273 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.525
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.532
Valve Lift with Factory Rocker Arm Ratio: 0.525 int./0.532 exh. lift
Lobe Separation (degrees): 114
so can any one till me what i have to chang from the ls1 edit because i don't now what to do,,
thank you ,,,,,,,,,,,,,,,,,
Advertised Duration: 269 int./273 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.525
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.532
Valve Lift with Factory Rocker Arm Ratio: 0.525 int./0.532 exh. lift
Lobe Separation (degrees): 114
so can any one till me what i have to chang from the ls1 edit because i don't now what to do,,
thank you ,,,,,,,,,,,,,,,,,
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Originally Posted by WS6FirebirdTA00
larry you dont have this? its in the timing section? you can always go through the start up correction table and reduct it yourself by that amount
Here's a pic: http://www.mustangmods.com/data/440/...1image0001.jpg
Excuse my photography but you can see it is not highlighted.