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Thread: I need some help

  1. #1
    Tuner in Training
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    I need some help

    I just finished up H&C on a f-body that has a vortech SC. The car has the tune that vortech put in it. It starts up and idels fine but goes lean at WOT and breaks up. I drove the car a short distance and noticed the condition get a little better. Someone was telling me I should drive the car for about 100 miles before I start the tune because the pcm will relearn and sort itself out. Where should I start. I have a LM-1 to log A/F and EIO interface
    452RWHP-408RWTQ---11.2@120-NA
    75 shot-10.6@129 1.47 60ft.

    http://videos.streetfire.net/video/b...3b012749e1.htm

  2. #2
    Супер Модератор EC_Tune's Avatar
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    Check fuel pressure. You should have *no less* than 55 PSI at WOT. If you do, you're out of fuel somewhere. Pump, lines, filter, etc.

    Then start HERE and HERE

    EC
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  3. #3
    Tuner in Training
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    O.K., will do. I just wanted to add that before H&C the car ran great with the vortech tune in it.So I'll get a fuel and boost gauge hooked up and go from there. Any other idea's would be great. Thanks in advance
    452RWHP-408RWTQ---11.2@120-NA
    75 shot-10.6@129 1.47 60ft.

    http://videos.streetfire.net/video/b...3b012749e1.htm

  4. #4
    Супер Модератор EC_Tune's Avatar
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    My guess is that the heads & cam are moving a lot more air (naturally!) and thus the engine needs more fuel. It definitely sounds like a fuel issue anyway. One last thing to check, is the cam in straight up? I'm no mechanic but if it idles the same as before with the same cal and a bigger cam then something is strange.

    EC
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  5. #5
    Tuner in Training
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    The cam is straight up. It idels but does not sound like before. You can hear the cam.
    452RWHP-408RWTQ---11.2@120-NA
    75 shot-10.6@129 1.47 60ft.

    http://videos.streetfire.net/video/b...3b012749e1.htm

  6. #6
    Супер Модератор EC_Tune's Avatar
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    Ok, sounds like it's more of a VE/MAF tuning issue than anything else.

    EC
    Always Support Our Troops!