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idle fuel trim help

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Old 02-02-2004, 07:52 AM
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Default idle fuel trim help

my idle fuel trims are like -10% is that ok? part throttle its fine right at 0% anyone else see these kinda numbers at idle and is it ok?
Old 02-02-2004, 05:36 PM
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Originally Posted by WS6FirebirdTA00
my idle fuel trims are like -10% is that ok? part throttle its fine right at 0% anyone else see these kinda numbers at idle and is it ok?
Hi again, you should be able to improve those through the VE table. Try this first: using the 400/800/1200 rpm columns multiply by 75%/80%/85% respectively. This should take out some fuel at idle rpm ranges and shore up those idle trims. Tweak more if needed (slowly 5% at a time). Do this only after your part throttle is adjusted, load cells 6-14 are all reading 0 or negative after a 30 minute logging and cell 22 locks at 0 during WOT.
Old 02-02-2004, 06:37 PM
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well i had the guy at predator adjust it and my fuel trims were all screwed up so i went back to the other tune, part throttle went up to like +8 sometimes and i didnt like that too much. what can i tell him to do? what u just posted?
Old 02-02-2004, 10:36 PM
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-10 is fine at idle.I ussually shoot for 0 to -8,but -10 isn't a problem.




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