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understanding fuel trim's

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  • fleet man
    replied
    cool thanks. i love this system so much for looks and quality and design i want to help others to understand to be able to enjoy driving there cars so again thank you and all the other car people that are hear to do what they can for others.

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  • 2700 Cast
    replied
    Originally posted by fleet man View Post
    wow the car gods do hear your prayers
    After 550 posts, I figured, you deserved it...lol

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  • fleet man
    replied
    wow the car gods do hear your prayers

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  • fleet man
    replied
    should be a sticky

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  • fleet man
    replied
    Originally posted by R573CAR View Post
    What's an a.r.f. ?
    air fuel ratio

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  • R573CAR
    replied
    What's an a.r.f. ?

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  • fleet man
    replied
    help yourself to tune

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  • fleet man
    replied
    understanding the definition of l.f.t and s.f.t and a.r.f is always good to remind your self why you want to make adjustments not just push a button .

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  • fleet man
    replied
    no before you start the engine start the tablet turn key on don't start the engine connect then go to fuel modifier then advanced there you will see cold temp and where to add fuel or take it away. remember to turn self off make changes you want then turn self turn back on . use the ? at the top of tablet it has a ton of info and read e-tuner manual i read mine 5-6 times before i ever started my can . and i'm a 40 year master a s e technician.

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  • BITE_ME
    replied
    Learning doesn't start till 1200 RPM by default.

    Fuel trims can only happen if the O2 sensor is online..... Closed loop.

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  • Heatsoaked
    replied
    Good read. Thanks for posting. I'm starting to get it....slowly.....lol.

    Am I correct to assume everything mentioned only applies once the engine temp reaches 160? Before that, there's no feedback and thus no learning or modifying trims?

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  • fleet man
    replied
    read and understand

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  • fleet man
    replied
    bump back to top

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  • fleet man
    replied
    this is some thing that would help most new and experience people

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  • fleet man
    replied
    long fuel 2.jpg

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