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06-08 gt500 whats the stock boost?

Discussion in 'SVT Shelby GT500' started by Mr. Freeze, Aug 12, 2009.

  1. Mr. Freeze

    Mr. Freeze New Member Established Member

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    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.
     
  2. Alloy Snake

    Alloy Snake Member Established Member

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    Jacksonville.FL
    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.
     
  3. ZXMustang

    ZXMustang Banned

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    mine reads 9psi bone stock.
     
  4. alloy500

    alloy500 New Member Established Member

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    Stock, mine was at 7, went to 8 with CAI, and then to 11 with the 2.6 pully.
     
  5. Mr. Freeze

    Mr. Freeze New Member Established Member

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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. Spawn

    Spawn mmjax.com webmaster Established Member

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    Mine was about 8.5# stock and then with a cat back magnaflow, a JLT CAI, and tune it went to 10.3#.
     
  7. me32

    me32 BEASTLY SHELBY GT500 TVS Established Member

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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
     
  8. Streetkiller

    Streetkiller New Member Established Member

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    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. Red10thcv

    Red10thcv New Member Established Member

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    Thanks for Help Mr. Freeze.

    Problem was the tune.:bash:For not going with someone with GT500 experience.
     
  10. 09Troublemaker

    09Troublemaker " That don't sound stock" Established Member

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    ahhhh, big :nonono:

    mine was 9 now 13 with the 2.6
     
  11. cbrmuscle

    cbrmuscle New Member Established Member

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    I am at 9 with the Ford CIA and tune.
     
  12. mullens

    mullens New Member Established Member

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    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: Aug 17, 2009
  13. 03MUSCLE

    03MUSCLE 03 MUSCLE Established Member

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    Iam at 10.5 in good air and the FRPP intake and tune.
     
  14. TexasShelby

    TexasShelby New Member Established Member

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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
     
  15. TERMIN8TR

    TERMIN8TR New Member Established Member

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    with high iat2 temps timing will start getting pulled...........that's the killer
     
  16. psucobra

    psucobra New Member Established Member

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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. TexasShelby

    TexasShelby New Member Established Member

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    That would be about right under summer conditions or if it's been run hard.
     
  18. GT50008

    GT50008 New Member Established Member

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    Castle Pines North
    6 psi with FRPP CAI at 5700 ft.

    9 psi with FRPP tune and TVS at 5700 ft.
     

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