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Thread: Golf MK5 GTI remmaped to stage 2+, lots of problems

  1. #1
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    Golf MK5 GTI remmaped to stage 2+, lots of problems

    Hello everyone,
    I'm new to the forum.


    I'm posting this here so maybe someone could help me.
    I'll try to keep it short.


    My car is a k03 MK5 Golf GTI. I bought it like two years ago.
    Having in mind to go stage 2+, I have changed plenty of things like : new Audi S3 injectors, hpfp, decat turbo-back exhaust, switched to a 1.8t oil pump, CAI, intake flaps delete, PCV delete, new suspension, spark plugs, R8 coils, and many others.


    The car has been remmaped to 282 hp. In the first few months, it was a joy to drive it.


    By the time, it has started to make a weird noise, which is comming from the turbo area (as far as I can tell). Sounds like a cracked pipe which blows air.


    At first I thought that's the DV. I have replaced it for 3 times or so, and still nothing. Afterwards, I checked all the air pipes for cracks. Again still nothing.


    When I drive it, if I'm in the 4th gear for example, around 2500k - ish RPM or so, and floor it, by the time it reaches 3500k - ish RPM, if feels like lots of miss-fire, blows lots of air (the noise I was talking about), I don't even know how to explain it. But after 3500k RPM, it's a rocket AND THE NOISE IS GONE.


    This issue is killing me, my mechanic told me that this problem might be comming because of the new soft. He couldn't find any problem.


    Did anyone ever have a similar problem ? Shall I flash the ECU back to stock to see if this problem still persist ?


    One of my friends pointed to the turbo waste-gate ? Could that be the issue ?


    Thank you all in advance.

  2. #2
    Administrator Crasher's Avatar
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    Which year and engine code?
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  3. #3
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    Hi, the year is 2006 and engine code is BWA.
    I've been told that this sound might be coming from the DV, the ECU would open it to release the peak pressure and close it back around 3500 RPM.
    I've only used rev D and G so far. I'm gonna try with a DV+ asap.

  4. #4
    Administrator Keithuk's Avatar
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    First posts normally go in introductions else you could get a free fix and we never see you again!!!

    Your car spec says: 2006 Golf GTI 2.0 TFSI BWA are you sure its TFSI and not TSI or FSI?

    Manufacturer: VW, Date(s) Used: 05/2005-02/2009, Model: Golf GTI, Engine Code: BWA, 147Kw, 200PS, 2.0 Ltr, 4 Cyls, Remarks: GTI, 16v Timing belt
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


  5. #5
    Administrator Crasher's Avatar
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    From experience I would say go back to standard and work your way forwards from there, I had had bad experiences with a lot of remaps. Presumably there are no fault codes? Have you done a boost log, 3rd gear WOT from as slow as possible to as far as possible?
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 7.5x18 Alutec Monstr wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

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