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sportback 170 black smoke

Discussion in 'A3/S3/Sportback (8P Chassis)' started by stespe2006, Jan 8, 2014.

  1. stespe2006
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    stespe2006 New Member

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    [Jan 8, 2014]
    so I brought a 56 plate sportback 170 that had previously been remapped according to previous owner to around 200bhp which I would agree has been done due to the amount tyres I'm having to change, way to much torque for the 2wd anyway each time I accelerate aggressively I get quite a lot of black smoke out the back which is obviously fuel as it's black, could this be due to the remap or is there anything I can check before getting the map rewritten,

    would a a dirty egr cause black smoke??
    #1
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    [Sep 15, 2014]

  3. LEE69
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    LEE69 07 170 DSG

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    [Jan 8, 2014]
    You can have the soot mapped out, not much of a "sleeper" if it does that
    #2
  4. stespe2006
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    stespe2006 New Member

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    [Jan 8, 2014]
    totally agree can also be embarrassing lol.. having the soot mapped does that just mean decreasing the amount of fuel?
    #3
  5. LEE69
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    LEE69 07 170 DSG

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    [Jan 8, 2014]
    No idea sorry, just know it can be done.
    #4
  6. asalhan
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    asalhan Member

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    [Jan 8, 2014]
    It might have had a DPF delete.
    #5
  7. hollow
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    hollow Active Member

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    [Jan 8, 2014]
    poor mapping needs a better map ,a slight wisp of smoke on acceleration fine . just a poor map on the car .
    #6
  8. Sidhu88
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    Sidhu88 Active Member

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    [Jan 9, 2014]
    You tried running on a better fuel? e.g. run on vpower diesel rather than normal diesel? A normal car might take 2 full tanks to full adjust to the fuel, your car may be mapped to run on higher cetane fuel. If this is the case and your running on normal diesel then here lies your problem.
    #7
  9. LEE69
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    LEE69 07 170 DSG

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    [Jan 9, 2014]
    Any car with a knock sensor will adjust automatically, did you see the r-tech fuel test with V.B.H?
    #8
  10. Sidhu88
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    Sidhu88 Active Member

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    [Jan 9, 2014]
    Nope. linky? I've always heard/been told that the cars self learn function normally takes a while before fully adjusting to a higher/lower rated fuel.
    #9
  11. willz17
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    willz17 Member

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    [Jan 9, 2014]
    Hi mate,


    before my current car, i had a seat leon fr pd170 engine.
    I also had this mapped at stage 2 with dpf delete.
    whilst at stage 2 this smoked quite alot only on hard acceleration and even more noticeable in 5th and 6th gears.

    I soon had my map tuned down to shark stage 1+ from what i remember miko explaining it to me as.
    after this stage 1+ map was loaded it was much better just a light haze of smoke appeared on hard acceleration but nothing if driven normal.

    so overall mate i think your car has had DPF removed and this is the part which is supposed to catch the soot.

    Hope this helps
    Will
    #10
  12. LEE69
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    LEE69 07 170 DSG

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    [Jan 9, 2014]
    #11
  13. c_w
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    c_w Active Member

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    [Jan 9, 2014]
    I very much doubt a knock sensor plays any part in a TDI engine, since it's knocking every time it's "firing" as it's a diesel engine. Fueling and timing is all based on engine position and throttle surely.
    #12
  14. LEE69
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    LEE69 07 170 DSG

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    [Jan 9, 2014]
    I'm on a learning curve with diesels so just assumed it would be the same as a petrol.
    #13

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