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Thread: 2.5 bar map offset specs

  1. #1
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    Default 2.5 bar map offset specs

    Hi Guys, i am wondering if anyone has the Offset spec and the KPA spec on the 2.5 bar map sencor part #0261230042 (off the sensor) 90423637 (off the bag) this is a GM cobalt sencor i believe

  2. #2
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    For2.5 bar MAP sensor 12580698 try this:

    MAP Scaler 207.65625
    MAP offset 9.00

    I think that is right from the factory tune settings for the ION Redline.
    Last edited by scdyne; October 11th, 2010 at 06:49 AM.
    -Adam Chant
    Tune it or lose it!
    2007 Saturn SKY 2.4L Automatic - E67
    EFILive Tuned

  3. #3
    Lifetime Member johnv's Avatar
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    Do the 2.5 bar sensors read okay to 20 psi boost on our cars ?

    I tried a 3.3bar sensor and it was a waste of money, couldn't tune VE off boost with any consistancy..
    Back yard boost
    347+ T76 = 770 rwhp 10.96 @ 135 mph

  4. #4
    Senior Member Wasted Income's Avatar
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    ^ I want to know this too....time to move up from a 2 bar
    2005 Silverado Duramax LLY - EFI Live Tuned
    1969 Chevrolet C-10 Pickup - Turbocharged 5.3L/4L80E - EFI Live Tuned
    1975 Avenger Jet Boat - 6.0L/Berkley pump - EFI Live tune in progress

  5. #5
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    2bar = 29.00psi
    2.5bar = 35.259psi

    2bar map values I posted in an earlier thread and 2.5bar is used in ZR1 and those values can be found in a stock file. If you need me to post them let me know

    Paul Meister
    EFI Calibrator/Managing Member, Torq Speedlab, LLC
    Specializing in late model Ford, GM and Dodge EFI Calibrations
    SCT, EFI Live, HP Tuners, FAST, BS3 and much much more

  6. #6
    Lifetime Member johnv's Avatar
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    just want to know if anyone useing the 2.5 bar sensor has pushed it to 20 psi boost and the sensor reads beyond 2 bar okay.
    Back yard boost
    347+ T76 = 770 rwhp 10.96 @ 135 mph

  7. #7
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    I'm still not sure about the 12580698 MAP sensor (Now 12615136) whether it is a 2 or a 2.5 bar sensor. Anyone know what years they use them on so I can try to find a Cobalt SS tune? I was running 190/8 in my tune, but it still feels off. I'll try the 207/9 when I get home.
    Last edited by nevinsb; October 11th, 2010 at 09:28 PM. Reason: Spelling counts kids.
    E85 is NOT flex fuel.

    2003 Chevy S10 4.3L LU3 LS1B Auto
    48 LB injectors
    Race Proven Motors 2114 intake
    T70 turbo.

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