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Thread: Power Curves (Graphs)

  1. #1
    On a Sabbatical
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    Default Power Curves (Graphs)

    These are my printouts Tunit gave me before the printer decided to pack up and go home -

    Diagnostix UK Box-


    Tunit Box -

  2. #2
    Regular Member Scooby's Avatar
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    Damn..why did you have to bust the printer AJA! LOL I cant wait to see these appear on the site so we can print them off....

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    Ex Vec-C Admin / Founder Duncan's Avatar
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    I can't make out the writing in the key there Alex - what exactly are the two curves on each printout?

    Did the guys at Tunit not hook up sensors to get your boost pressure and AFR (Air to Fuel ratio) - the latter is extremely useful to see how well the engine/box/remap is running.

    D

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    Regular Member Andy's Avatar
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    the tuning boxes dont touch boost pressures duncan, its just a case of using the extra fuel diesels dump in by default. Air/fuel test would be useful though as although you can seriously damage your engine with bore wash from overfueling on petrols, im not clued up enough with diesels to know if it cans till happen.

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    Ex Vec-C Admin / Founder Duncan's Avatar
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    I knew that the boxes didn't touch boost pressure (didn't make that clear) but it's still good to see what the car is doing with the turbo.

    As you said, the AFR reading would be extremely useful, especially given the way that the boxes work (whacking more fuel in). You'd be able to see exactly what's going on and whether you should ease off the settings a bit to keep things 'safe' albeit at the loss of a bit of power.

    It looks impresive to whack up the boxes to max, smoke everyone to death! LOL and get a nice high figure - but what is that actually doing inside the engine? The AFR reading would help there.

    Just wondered if the Tunit guys read more data?

    D

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    Regular Member bruceybonus's Avatar
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    Quote Originally Posted by Duncan
    It looks impresive to whack up the boxes to max, smoke everyone to death! LOL and get a nice high figure
    ooh that would be me then!

  7. #7
    Ex Vec-C Admin / Founder Duncan's Avatar
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    LOL@brucey!

    Back to my original question - what are the two curves Alex? They both seem to have BHP in the key box but trying to work out what each one is!

    D

  8. #8
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    blue is the bhp, red is the torque. the torque figures are on the right. the red line is very 'flat' at the top, which is typical of a torque curve. The blue is very 'peaky' which is typical of bhp

  9. #9
    Ex Vec-C Admin / Founder Duncan's Avatar
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    Quote Originally Posted by Andy
    blue is the bhp, red is the torque.
    Are you sure? The red text in the key box definitely has the words Power and BHP and the blue looks like it has BHP as well - that's why I was wondering.

    If it's a torque and power curve then there is a very serious fundamental error with the curves!

    D

  10. #10
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    Quote Originally Posted by Duncan
    Are you sure? The red text in the key box definitely has the words Power and BHP and the blue looks like it has BHP as well - that's why I was wondering.

    If it's a torque and power curve then there is a very serious fundamental error with the curves!

    D
    why?

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