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Is there somthing wrong with my car?

This is a discussion on Is there somthing wrong with my car? within the Camaro / SS forums, part of the Vehicle Specific category; Well about 6 or 7 months ago i took my 99 z28 to the track. All it had done was ...

  1. #1
    Junior Member spooky's Avatar
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    1999 Z28

    Is there somthing wrong with my car?

    Well about 6 or 7 months ago i took my 99 z28 to the track. All it had done was rims i ran a 8.6 sec 1/8 at 83 mph 2.2 60 ft good reaction. So far i have added a 3 in y pipe, 3in exhaust, a MAF, free mods, ported TB, and intake. It has air suspension in the rear so i can dampen the rear suspension. Well last night me and my buddy went to the track and the best i ran was a 8.902 @81.2 mph my reaction was .027 and 60ft was 2.1 with my buddy in car. Without him in the car i would run 9.0 to 9.1 and 60 ft at 2.0 and a 2.1 the mph was a little faster but mid track it seemed to be lacking. the outside temp was real close to the same.

    I don't know why it is running slower any help would greatly appreciated.

    P>S its still faster than those GTs i beat all ot them at the track except a 03 cobra which i knew better anyway.

  2. #2
    Just me Y2KPewterSS's Avatar
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    What MAF did you put on? Its usually a bad idea to put an aftermarket MAF on. The factory MAF is good for 500 HP.
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    Junior Member spooky's Avatar
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    it's a SLP MAF. Would it make that big of a differance?

  4. #4
    Just me Y2KPewterSS's Avatar
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    Quote Originally Posted by spooky View Post
    it's a SLP MAF. Would it make that big of a differance?
    They can. Try putting your stock one back on and see how it runs.

  5. #5
    I lika da Chevy's LETHALxLS1's Avatar
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    slp maf is trash

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by BREAKxNECKxSPEED View Post
    slp maf is trash

  7. #7
    SS Driver aerojt's Avatar
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    Quote Originally Posted by SeVeReDiStOrTiOn View Post
    Seems like it would be better in theory though. Plastic so the air is cooler, larger for more volume, who knows. I always thought they would help, wonder why not?

  8. #8
    Senior Member greatwhiteZ28's Avatar
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    well to make it bite better add more air to the right rear air bag, making it better for launching, ive heard people just buying air ride for that purpose

  9. #9
    Junior Member spooky's Avatar
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    The suspension is air ride but not air bags so when i put more air in they both air up. I didn't buy it the previous owner did. thet look like regular struts unles the car is jacked then you can see the rubber. I had them soft so they would give a little and the tires were 25.5 psi. it griped good on the line but at about the 10ft mark is were it started to slip. I have an A4.

  10. #10
    STAY PUFT thecorrectformula's Avatar
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    Most of your problem is your probally pushin the limit to where you need a tune to bring all your perameters back in to specs. That'll help out alot.

    And not a hand held programmer, get it custom tuned. Either dyno or street tune.

  11. #11
    I lika da Chevy's LETHALxLS1's Avatar
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    I believe the slp maf leans the car out too much-not positive-BUT I do know that everyone I talked to that put one on wound up putting the stocker back on.

  12. #12
    Senior Member 35thAnniZ28's Avatar
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    the maf messes with timing ..correct?

  13. #13
    Junior Member spooky's Avatar
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    Thinks guys! I plan on getting a cam when i get back from iraq which should be around christmas. I will get a tune then as well. Untill then no more racing for me

  14. #14
    I lika da Chevy's LETHALxLS1's Avatar
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    Quote Originally Posted by 35thAnniZ28 View Post
    the maf messes with timing ..correct?

    It measures the amount of air entering the TB which lets the CPU adjust the fuel spray. I believe.
    Last edited by LETHALxLS1; 09-17-2007 at 07:14 PM.

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