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Thread: Please explain Delta MAP Kpa...

  1. #21
    Lifetime Member jfpilla's Avatar
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    [quote=redhardsupra;67478]i'm not sure what is there to be confused about:

    That was a little joke. I guess it was a too subtle.
    2003 red vert
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  2. #22
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by jfpilla View Post
    Quote Originally Posted by redhardsupra View Post
    i'm not sure what is there to be confused about:
    That was a little joke. I guess it was a too subtle.
    lol... took me a minute

  3. #23

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    Quote Originally Posted by dc_justin View Post
    The next question is, where is 400kPa (gauge, 500kPa absolute) defined as the system's fuel pressure?
    Thank you!

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  4. #24
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    if they're measuring fuel pressure, wouldnt there be a part number for some sort of sensor? do we have any gm dealers onboard to check it out? the big question is do they measure it, or just regulate it and hope it behaves as intended?

  5. #25

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    Well its in the 07-08 ZO6 files and my whole point was if we are modifying this table, it only really needs to be adjusted from the halfway point as half the table is out the range of the NA ZO6....

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  6. #26
    Lifetime Member jfpilla's Avatar
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    Howard,
    It would seem so. You know I calculated the IFR for the stock LS7 injectors for my 2003 vette. I doubt if it's a coincidence that the calculated values fit neatly into the 400 to 480 range. The only areas where the numbers change.
    Joe
    2003 red vert
    Mods:
    LS7 crate engine, wet sump, 24xx reluctor
    LPE 100mm MAF
    Vararam, cold air intake and bridge
    RPM Level 6/4L60e trans
    3.42 gears
    Yank SS3600
    1-7/8" AR headers
    Z06 exhaust
    470rwhp 437rwtq
    1/8th mi-1.526-60'-6.862-1/8th-@100.74mph

  7. #27

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    So Joe, based upon that, we are only using 6-7 locations of the IFR table when making an injector change. What is all the other resolution for?

    Even it is used for a supercharger.

    www.redline-motorsports.net

    1-954-703-5560

    2006 ZO6 895/866 with APS TT
    2010 SSRS Camaro HTR-900TT (798/801)
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    2012 ZL1 Auto (10.33@135 MPH) Video Here!

  8. #28
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    Quote Originally Posted by Redline Motorsports View Post
    So Joe, based upon that, we are only using 6-7 locations of the IFR table when making an injector change. What is all the other resolution for?

    Even it is used for a supercharger.
    I'd have to assume that the Gen-IV cars are the same as the trucks... which have a Fuel pressure sensor from the factory. Check the PID SAE.FRP. That table allows the PCM to maintain stable fueling in a wide variety of conditions, including undesirable ones such as a faulty fuel pump or regulator. Very cool stuff.

  9. #29

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    Quote Originally Posted by dc_justin View Post
    I'd have to assume that the Gen-IV cars are the same as the trucks... which have a Fuel pressure sensor from the factory. Check the PID SAE.FRP. That table allows the PCM to maintain stable fueling in a wide variety of conditions, including undesirable ones such as a faulty fuel pump or regulator. Very cool stuff.
    Justin,

    Where is that sensor on the trucks? I have taken quite a few new ZO6's down to the frame and never have seen that sensor.

    Howard

    www.redline-motorsports.net

    1-954-703-5560

    2006 ZO6 895/866 with APS TT
    2010 SSRS Camaro HTR-900TT (798/801)
    2011 HTR-850R Camaro
    2012 ZL1 Auto (10.33@135 MPH) Video Here!

  10. #30
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    Quote Originally Posted by Redline Motorsports View Post
    Justin,

    Where is that sensor on the trucks? I have taken quite a few new ZO6's down to the frame and never have seen that sensor.

    Howard
    Couldn't tell you, just knew that it was accurately reporting. In the tank?

    Justin

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