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  1. #1
    SVT God Mr. Freeze's Avatar
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    06-08 gt500 whats the stock boost?

    i got a buddy with a 07 gt500 and wont go past 5 psi of boost is this normal? whats the stock boost reading & with a cold air what would be the boost increase if any? any help would be appriecated.
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  2. #2
    Crazy SVT Poster Alloy Snake's Avatar
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    My stock boost was in the 8s,+1psi for cold air,+4 for 2.6 pulley,+2 for 10% lower.At sealevel-The higher the altitude the lower the boost.
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  3. #3
    mine reads 9psi bone stock.

  4. #4
    Rookie SVT Poster alloy500's Avatar
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    Stock, mine was at 7, went to 8 with CAI, and then to 11 with the 2.6 pully.
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  5. #5
    SVT God Mr. Freeze's Avatar
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    its been very humid in the area would this contribute to the boost loss to 5lbs? its a bone stock 07 gt500 for the exception of a cai and tune for it.

  6. #6
    mmjax.com webmaster Spawn's Avatar
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    Quote Originally Posted by ZXMustang View Post
    mine reads 9psi bone stock.
    Mine was about 8.5# stock and then with a cat back magnaflow, a JLT CAI, and tune it went to 10.3#.
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  7. #7
    BEASTLY SHELBY GT500 TVS me32's Avatar
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    stock is about 8.5-9PSI, but if the car has less than 50 starts or 100miles it wont boost more than 5PSI

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  8. #8
    I know when the car is new from the dealer it will not make any boost over 5lbs until the car is run a certain amount of miles or has been started over 50 times. This is to break in the car and stop the lot guys from thrashing the car at the dealership. If the car has miles on it and this is not the protection tune mode, it sounds like you have a problem.

  9. #9
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    Thanks for Help Mr. Freeze.

    Problem was the tune.For not going with someone with GT500 experience.

  10. #10
    "Is That Thing Stock...." 09Troublemaker's Avatar
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    Quote Originally Posted by Red10thcv View Post
    Problem was the tune.For not going with someone with GT500 experience.
    ahhhh, big

    mine was 9 now 13 with the 2.6

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  11. #11
    Crazy SVT Poster cbrmuscle's Avatar
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    I am at 9 with the Ford CIA and tune.
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  12. #12
    SVT God mullens's Avatar
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    Quote Originally Posted by Mr. Freeze View Post
    its been very humid in the area would this contribute to the boost loss to 5lbs? its a bone stock 07 gt500 for the exception of a cai and tune for it.
    High humidity will result in slightly lower boost numbers, but not 5psi. I didn't think the tune could adjust boost. Learn something new every day.
    Last edited by mullens; 08-18-2009 at 12:33 AM.
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  13. #13
    03 MUSCLE 03MUSCLE's Avatar
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    Iam at 10.5 in good air and the FRPP intake and tune.
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  14. #14
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    humidity is not the culprit, it's actually a little blessing.
    what will bring it down is altitude and temperture.
    I'm in midland 2800'msl and at about 95* my boost is reduced from around 8psi to 6psi

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  15. #15
    SVT God TERMIN8TR's Avatar
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    Quote Originally Posted by TexasShelby View Post
    humidity is not the culprit, it's actually a little blessing.
    what will bring it down is altitude and temperture.
    I'm in midland 2800'msl and at about 95* my boost is reduced from around 8psi to 6psi
    with high iat2 temps timing will start getting pulled...........that's the killer

  16. #16
    Crazy SVT Poster psucobra's Avatar
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    I have about 300 miles on my '09 and the last time I had it out I was seeing about 6lbs of boost. The elevation here in El Paso is around 3,700' above see level. Temps are ridiculous out here. Does that seem about right for boost? Funny thing is I would see about 5-6lbs on my '04 and as high as 7-8lbs in the winter.

  17. #17
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    Quote Originally Posted by psucobra View Post
    I have about 300 miles on my '09 and the last time I had it out I was seeing about 6lbs of boost. The elevation here in El Paso is around 3,700' above see level. Temps are ridiculous out here. Does that seem about right for boost? Funny thing is I would see about 5-6lbs on my '04 and as high as 7-8lbs in the winter.
    That would be about right under summer conditions or if it's been run hard.

  18. #18
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    6 psi with FRPP CAI at 5700 ft.

    9 psi with FRPP tune and TVS at 5700 ft.

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