Gen 5 with 3.3" Pulley results
#21
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Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
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Originally Posted by 2000SilverBullet
Don't forget where I live. Right now, it'* almost 100% humidity with lots of Fog.......horn and 40 F temps.
In our summers, it gets warmer but the humidity remains high.
Very good for SC.
In our summers, it gets warmer but the humidity remains high.
Very good for SC.
#22
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Join Date: Jan 2004
Location: Montréal, QC
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Originally Posted by 2000SilverBullet
Don't forget where I live. Right now, it'* almost 100% humidity with lots of Fog.......horn and 40 F temps.
In our summers, it gets warmer but the humidity remains high.
Very good for SC.
In our summers, it gets warmer but the humidity remains high.
Very good for SC.
In reference to fuel trims, the MAF sensor is very good at compensating for air density based on temperature, but introduce big changes in humidity and it then becomes apperant the MAF has some limitations. In my experience, humidity was the single biggest contributor to varied results because of operating environment.
Originally Posted by 2000SilverBullet
What do you mean by locking the LTFT? I will monitor the LTFT but what should I be looking for?
As a rough rule of thumb, once your MAP value is above 100 Kpa (~atmospheric pressure), then you should be in PE mode, which means the O2 value is ignored and the fueling is aplied from predetermined values, subject to the correction factor of the LTFT.
Ideally the LTFTs would lock at 0 while in PE mode. This is possible under most weather conditions, but not all. Typically people have winter and summer tunes.
Originally Posted by 2000SilverBullet
I'm currently saving for a wideband Air/Fuel gauge to assist tuning.
Cheers,
#23
Thanks.
Learn something every day.
I won't consider dropping pulley sizes until I check it all out first.
This will probably be as far as I'm going to mod now.
It'* time to concentrate on other things in life.......
Learn something every day.
I won't consider dropping pulley sizes until I check it all out first.
This will probably be as far as I'm going to mod now.
It'* time to concentrate on other things in life.......
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