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just wanted to know

This is a discussion on just wanted to know within the Firebird / WS6 forums, part of the Vehicle Specific category; I was curious if anybody has had this experience.I have added the simple bolt ons airlid, smooth bellows, slp exhaust, ...

  1. #1
    now greybat66
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    navy blue metalic
    1998 trans am conv

    Unhappy just wanted to know

    I was curious if anybody has had this experience.I have added the simple bolt ons airlid, smooth bellows, slp exhaust, msd wires,and k&n air filter.The car feels strong but i feel like its not up to par on tuesday i am giong to take it to get it dynotunned at the vette dr in amityville ny .The car is running a little lean and i feel like its not getting great mileage.I wonder if any of my bolt ons have affected the cars performance, thank you.

  2. #2
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    How do you know it is lean?

    Most of the time, bolt-ons will get you running rich.
    The bolt-ons will get you 40RWHP at the most (on average). The heat will also slow the car down a little bit.

  3. #3
    now greybat66
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    navy blue metalic
    1998 trans am conv

    sorry thats right lean thats what i meant.

  4. #4
    now greybat66
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    navy blue metalic
    1998 trans am conv

    sorry i meant rich

  5. #5
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Headers?

  6. #6
    now greybat66
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    navy blue metalic
    1998 trans am conv

    why does the car run rich and will the tune help the cars power

  7. #7
    now greybat66
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    navy blue metalic
    1998 trans am conv

    no no headers

  8. #8
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by purplebat66 View Post
    why does the car run rich and will the tune help the cars power
    What MAF?

    They tend to run rich to prevent issues with going lean. Safety.
    I don't think a tune will get you very much though without having headers.

  9. #9
    Member Speed Psychosis's Avatar
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    Red
    98 T/A M6 w/lid and LM1

    lean is very dangerous to an engine. cuts its life. every car is different and needs a personal tune for optimum performance. since gm obviously couldn't do that, they tune it so that all run a little rich. for some reason mods make it worse, especially headers.

  10. #10
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Speed Psychosis View Post
    for some reason mods make it worse, especially headers.
    Headers because it has the stock timing and fueling tables loaded...which use the O2's to read exhaust A/F. More flow across those O2's and they try to adjust by adding fuel.

  11. #11
    Member Speed Psychosis's Avatar
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    Red
    98 T/A M6 w/lid and LM1

    ^ah, cool

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