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Thread: 2 or 3 Bar MAP?

  1. #1
    Potential Tuner
    Join Date
    Dec 2018
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    4

    2 or 3 Bar MAP?

    Where do find the information needed to get a right 2 or 3 bar MAP sensor needed? I have a 2004 Chevy Colorado 3.5L. My factory MAP part number is 12614970. It looks like the MAP out of a 2014 Camaro 7.0L (part number 12644569) will be a drop in replacement but I don't know if its a 1,2, or 3 bar. Can 1) anyone validate my theory that this will work and 2) help me figure out if what bar it is? Thank you for the help!
    Last edited by teamweeeman; 12-05-2018 at 01:37 AM.

  2. #2
    Senior Tuner cobaltssoverbooster's Avatar
    Join Date
    Dec 2008
    Location
    Nevada
    Posts
    4,452
    run the ZR1 Sensor 12592525 3-Bar... may require a sensor seal swap and minor hold down bracket modification but it should work just fine.
    Linear=312.5 kpa
    Offset=-11.25 kpa


    The I5 P12 ecu has no OS upgrades to include any modification for boost so your going to have to get creative and plot against some custom histograms to get stuff working properly.
    This means no matter what you do you will only be able to plot fueling up to 105 kpa, and there are no Boost Enrichment Tables to add fuel under boost while keeping it separate from N/A conditions.
    The only way around this is to install the sensor to monitor pressure in the scanner, run maf only mode with it installed post BOV in a 3" tube, and if you exceed the g/cyl axis on the spark table you will have to scale the tune. All enrichment fuel will have to be manually adjusted to commanded 11.7 afr by the time boost hits 5 psi which is roughly 135 kpa. by the time you hit 8-10 psi i would be forcing a 11.5 afr value which is 156 to 170 kpa.
    2000 Ford Mustang - Top Sportsman