| Go back to previous topic | | Forum name | Engine Management Systems & Controllers | | Topic subject | Coolant corrected air density | | Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i54&topic_id=2704 |
2704, Coolant corrected air density
Posted by Aggression, Oct-28-06 05:25 AM
I've been searching, but haven't found anything really solid on this.
Has anyone messed with this yet and if so has it helped out? If you did mess with it, what thermostat are you running? Stock or the 160?
If you could put up your settings as well I would appreciate it. Either that or point me to some info that helped you.
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2705, RE: Coolant corrected air density
Posted by gilee_8, Oct-28-06 07:49 AM
Yeah... I been looking around in the past 1-2 months, since where I live, the weather is getting cold.
So does anyone messed with it before? and what result does it gain?
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2727, RE: Coolant corrected air density
Posted by XtremeRS, Nov-03-06 03:34 AM
I use this on my RS..It can be set up for coolant correction, OR intake Air temp correction. I had some lean re-start issues, where the IAT would get heat soaked, and on a hot restart it would run a bit rough until EGO correction kicked in. After further digging with the issue, i've come to my own personal conclusion that the air temp correction factor is too "aggressive" as intake air temps rise, at least on our engine setups. The correction factor is pulling out too much fuel, as IAT rises in temperature.. It's easily seen by just running closed loop at idle, and watching the o2 trim value increase fueling as IAT rises. It shouldnt do that, providing the correction factor for IAT is set correctly. So I used the IAT corrected air density factor, and that pretty much solved my lean start issues. When you change it to IAT be aware that the graph will still show coolant..but its correcting IAT. I just adjusted to where my o2 trim was close to 100% when it was just warmed up, then adjusted it on a hot restart. It worked really well. Just makes me wonder if that correction factor is off, then it will be off in boost too..
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2748, RE: Coolant corrected air density
Posted by rs-pssst, Nov-08-06 02:51 PM
You could always just take the thermostat out and set the fans to turn on and off at cetain temps to control the coolant temperatures. But, It may take a while for the car to initially warm up. After warmup, you usually are above 180degF anyways.
Is your car running too hot?
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2749, RE: Coolant corrected air density
Posted by Aggression, Nov-09-06 04:00 AM
My coolant temp reading via my MS software tells me I am up near the 260 range. I am not running the 160 thermostat, and my temps on the stock gauge are perfect.
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