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Golf ECU (018 CJ) OBD flashable?

Oranoco Nov 2, 2016

  1. Oranoco

    Oranoco Registered User

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    I have my Golf ECU standing in the wings to go in but seem to recall it being mentioned that adding a 12V ignition live at the socket would enable flashing via the port as opposed to bench flashing. As is always the way now I come to doing the work I can't find the info.

    Anybody able to advise?

    Also with the Golf ECU will an OBD gauge as offered for the RS4 and Golf work?
     
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  3. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    Pin 43 requires +12v to enable write.

    A3's had Pin 43 wired into pin 13 on the OBD port, so you could apply the 12v right from inside the car (i presume the VAG programmer will have applied it)

    I guess you either patch a wire thru to the OBD port, or put a switch in at the ECU that you can use to enable 12v to pin 43.
     
    Oranoco likes this.
  4. EvilSnow

    EvilSnow Registered User

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    Great to remember lol

    Sent from my SM-G920F using Tapatalk
     
  5. Oranoco

    Oranoco Registered User

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    Nice one cheers mate
     
  6. AlexA4Avant

    AlexA4Avant Registered User

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    Does that work on the apt ecu


    Sent from my iPhone using Tapatalk
     
  7. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    I beleive APT uses the later ME7.5 system and doesnt need any messing around as the ECU is natively flashable.

    Theres not much point messing with tuning a NA 1.8 though, the money would be far better spent buying a turbo car.
     
  8. AlexA4Avant

    AlexA4Avant Registered User

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    Was wondering as considering supercharging it low boost 7 psi ish and wanted to make sure it's all happy with the surporting mods obviusly. Fancy ya bit of something I haven't ever done before wanting more bhp without buying a new car


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  9. aragorn

    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    Theres just no point. If you really want more power, fit a turbo engine. Or a V8.

    Never build what you can buy, is something i've learned over many years of modifying cars. Sure, if you want to install a Viper V10 in the front of an Escort as a challenge, then by all means go for it. But trying to junkyard supercharge an engine that the factory already produced in boosted form and can be purchased for peanuts never makes sense. You'l end up with someting that cost more and doesnt drive as nicely as a factory turbo car.

    When a 1.8T A4 is about 500quid, theres literally NO point doing anything other than just buying a 1.8T. If your really attached to your car, buy a donor and swap the engine over, but you'll face significantly higher insurance costs comapred with a factory car.
     
    EvilSnow likes this.
  10. Oranoco

    Oranoco Registered User

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    Honestly I have to echo Aragon's comments. Bung a filter on and an exhaust but tuning that engine is just like setting fire to cash. Could fit a nitrous kit, still like setting fire to money but having played with a kit on a mates Mk3 Fiesta running a 2litre from a Focus ST170 I can confirm it's good fun
     

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