2001 E39 530d - ecu remap/chip/piggy back device

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  1. 2001 E39 530d - ecu remap/chip/piggy back device 
    #1
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    noisebod's Car Details
    Model of Car:
    530d
    Year of Manufacture:
    2001
    Transmission Type:
    manual
    Car Body Type:
    touring

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    Hi, looking for advice on ecu tuning. i have an E39 530d touring and would like to improve driveability/economy (& a bit more grunt would be nice!)
    But i'm confused with the apparent choice of going for an expensive remap, tricky chip change or 'plug and play' piggy back device.
    These seem to cost about £80, look an easy DIY job and can be removed to restore the car back to original easily but are they any good or just a gimmick?
    your experience's/comments would be welcomed. Cheers.
     
     

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    mark@vorny.co.uk's Car Details
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    Please familiarise yourself with the forum posting rules and edit your thread title accordingly;

    2001 E39 530d - Ecu remap.........
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

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    TheEnd's Car Details
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    A diesel piggyback system just plugs in between the fuel rail pressure sensor and the ECU.
    It lowers the signal for fuel pressure, so the ECU increases fuel pressure to match the bad signal.
    This places extra strain on the high pressure pump (which can be very expensive) and the Injectors, which need to hold back 2000bar of fuel pressure.
    Yes, i did not miss out a decimal point, the fuel pressure on a common rail diesel is enough to cut steel if there is a directed jet.
    With a remap, the extra fuel needed to create more power is made by increasing the Injection Quantity, or IQ, by increasing the open time of the injectors.
    As well as this, a remap will increase boost pressure, and recalibrate torque control and smoke control maps.
    If you have even seen a VW or Mondeo fire out a smoke screen on the motorway, you can be sure they are using a "tuning box"
     
     

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    APtuning's Car Details
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    Quote Originally Posted by noisebod View Post
    Hi, looking for advice on ecu tuning. i have an E39 530d touring and would like to improve driveability/economy (& a bit more grunt would be nice!)
    But i'm confused with the apparent choice of going for an expensive remap, tricky chip change or 'plug and play' piggy back device.
    These seem to cost about £80, look an easy DIY job and can be removed to restore the car back to original easily but are they any good or just a gimmick?
    your experience's/comments would be welcomed. Cheers.
    Give any of us forum vendors a call and we'll be happy to help you with a proper remap which is specific for your car!
     
     

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    #5
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    chromiumuk's Car Details
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    Quote Originally Posted by noisebod View Post
    Hi, looking for advice on ecu tuning. i have an E39 530d touring and would like to improve driveability/economy (& a bit more grunt would be nice!)
    But i'm confused with the apparent choice of going for an expensive remap, tricky chip change or 'plug and play' piggy back device.
    These seem to cost about £80, look an easy DIY job and can be removed to restore the car back to original easily but are they any good or just a gimmick?
    your experience's/comments would be welcomed. Cheers.
    I use a roverron synergy tuning box (as recommended by Car Mechanics Magazine who ran one on their BMW engined Rover 75 diesel) on my Freelander diesel which also uses the 2 litre M47 BMW motor. It works very well though does cost around £180. ebay is littered with cheap units which are not to be recommended & have damaged many an ecu with the seller then claiming the owner must have fitted it wrongly.
    A remap will always be a more complete package which should give a bit better results but will be more expensive & as you've said not as flexible if you want to go back to standard.
    Both options rely on good sellers - good tuning boxes & remaps are great, bad ones are dreadful.
    If one of the remap guys on here can do you a remap for £300 or less then it's definitely the way to go. If it's a lot more then look into something like the synergy tuning box though I'm not sure if roverron caters for the 3 litre diesels.
     
     

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