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Thread: technical info 1.9cdti

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    Default technical info 1.9cdti

    I have a remapped 1.9cdti 150 and have just bought the torque app, I know the bhp is measured at the wheels but is that the same with torque? Also what are the safe running parameters for the intake air temp, coolant temp, intake manifold pressure, fuel pressure rail etc, just wanting to set a warning if the car ever exceeds these values if that makes sense

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    Regular Member john norris's Avatar
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    bhp is calculated on the app its not accurate by any means

    and I dont think you can set warnings like that though there is built in warnings such as engine temp if you start giving it some stick whilst it is below 70c and will give you ice warnings ect

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    I take the bhp with a pinch of salt, just wondering what oil temp etc should be

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    Vehicle : Vectra

    Trim : Design

    Engine : 1.9CDTi

    Year : 2005

    Mileage : Lots

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    Oil temperature should be about 80*c if I remember right.

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default

    If you set it up for a weight that give roughly what bhp is expected, as long as atmosphericntly reads the same, you can then use it to see if modifications are beneficial and make a comparison with othere cars. That is the best use for it.

    Coolant should run between 80 & 90 deg C
    Rail pressure varies from 50-1650bar
    Intake temp depends on outside air temp
    Boost pressure varies from 0-24psi above atmospheric on a standard map

    And you should be watching the road

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    Regular Member john norris's Avatar
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    Quote Originally Posted by nutron View Post
    If you set it up for a weight that give roughly what bhp is expected, as long as atmosphericntly reads the same, you can then use it to see if modifications are beneficial and make a comparison with othere cars. That is the best use for it.

    Coolant should run between 80 & 90 deg C
    Rail pressure varies from 50-1650bar
    Intake temp depends on outside air temp
    Boost pressure varies from 0-24psi above atmospheric on a standard map

    And you should be watching the road
    you can log the data now to online server and view all the data on google maps help improve your race to work no need to watch the app on the move

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    Quote Originally Posted by nutron View Post
    If you set it up for a weight that give roughly what bhp is expected, as long as atmosphericntly reads the same, you can then use it to see if modifications are beneficial and make a comparison with othere cars. That is the best use for it.

    Coolant should run between 80 & 90 deg C
    Rail pressure varies from 50-1650bar
    Intake temp depends on outside air temp
    Boost pressure varies from 0-24psi above atmospheric on a standard map

    And you should be watching the road
    Cheers nutron, the rail pressure is max about 1200 and all the temps seem about right, I just email all the logs back to myself, its quite a good app for the money. The boost goes up to about 23psi and my car is remapped, does this sound about right?

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    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default

    The max common rail pressure on a standard car is 1650 at top top end of the rev range under full load.
    The boost pressure you are seeing is completely standard, so you won't be straining the turbo.
    The easiest way to increase performance is to go into the pedal demand map and increase the fuel demand there, that takes all of 2 minutes.
    Without looking at the map you have, I could not comment on what they have done but the figures are quite reasonable for a 1.9CDTI engine.

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    Quote Originally Posted by nutron View Post
    The max common rail pressure on a standard car is 1650 at top top end of the rev range under full load.
    The boost pressure you are seeing is completely standard, so you won't be straining the turbo.
    The easiest way to increase performance is to go into the pedal demand map and increase the fuel demand there, that takes all of 2 minutes.
    Without looking at the map you have, I could not comment on what they have done but the figures are quite reasonable for a 1.9CDTI engine.
    The map that was done was from Ben at mas performance, I thought the boost pressure would have been higher tbh, havent really had a good run in it using the app, ill do that tomorrow on way to work and email data back. When the car was mapped it produced 194bhp and 296lbft, the app even though not 100% accurate comes up at around 160whp. Does this sound about right?

  10. #10
    Regular Member nutron's Avatar
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    Vehicle : Vauxhall

    Trim : very

    Engine : Z19DTH

    Year : Nosey

    Default

    35-40hp losses are to be expected depending on where in the range it hits peek power.
    Having pushed this engine hard with many mappers and even sat and mapped them myself, I only managed 197bhp on a standard turbo with much higher boost and alot of fuel AND I was running two intercoolers with torque around 380lbft slipping the clutch.

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