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Thread: Dyno numbers

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  1. #1
    Join Date
    Dec 2003
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    835

    Default

    Thanks again for setting up the dyno day.

    Numbers are very relative & we took a small sampling. Adjusting for correct air fuel ratio along the rev range, improved power everywhere. This was an increase from the proper tuning of the MAF 4 pot controller with the dyno meter & its wide band air fuel sensor. I was earlier rich at idle & lean at power, nowhere near ideal. I am very happy with the MAF, now that it has been properly tuned with the dyno's wide band air fuel sensor along the entire range of rpm's.

    Buy Bruno's MAF, it is good.
    erased due to slander

  2. #2
    Join Date
    Dec 2003
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    What'd the beast turn Baconator?
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

  3. #3
    Join Date
    Dec 2003
    Posts
    835

    Default It showed about half the torque of a couple seperate mustangs.



    The lower curve is a previous run while dialing in the MAF. I must epoxy the front of the maf controller together, to seize the adjusters into place. No more fudgin' with that bastard!

    The dyno operator pulled up the air/fuel ratio screen & helped dial the MAF. 5 or 6 runs was all it took to get the thing into a consistent, narrow mixture thoughout the rev range.

    Quote Originally Posted by Jeff N.
    What'd the beast turn Baconator?
    erased due to slander

  4. #4
    Join Date
    Dec 2003
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    in a sexy house
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    272

    Default Nice numbers and sweet curves Martin--

    Pretty impressive what the M30 puts out for nice, flat, low end torque when it's getting fed a good diet!

  5. #5
    Join Date
    Dec 2003
    Posts
    1,640

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    uh oh....i think i know what this means.....
    Bellevue WA
    90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
    86 Porsche 951 - Track Toy

  6. #6
    Join Date
    Dec 2003
    Location
    Canada, ON
    Posts
    732

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    Martin, you should upload the modified curve with a laptop... Then you can set up your pots at zero and dowload it back...
    '85 Euro 635csi Race Turbo, megasquirt, Group A
    '92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
    '02 Subaru WRX Wagon with STI springs, bigger sway bars

  7. #7
    Join Date
    Feb 2004
    Location
    Renton, WA
    Posts
    278

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    Quote Originally Posted by Bruno
    Martin, you should upload the modified curve with a laptop... Then you can set up your pots at zero and dowload it back...
    Really, you can set a particular curve to be the baseline? That is damn cool.

    Now I REALLY have to buy one.
    1992 535i TCD-s2

  8. #8
    Join Date
    Dec 2003
    Location
    Canada, ON
    Posts
    732

    Default

    I am getting my car on the dyno after the larger throttle body next month, I will make a custom curve for the MAF.
    '85 Euro 635csi Race Turbo, megasquirt, Group A
    '92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
    '02 Subaru WRX Wagon with STI springs, bigger sway bars

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