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Thread: ecu swap

  1. #1
    jbh
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    ecu swap

    right im possibly getting another A4 TDi 110 avant on a p reg now my cars an n reg so is it possible to swap over the ECU's? im thinking that the clocks aren't coded so in theory can I swap the ECU's and the the chips in the keys over? is it as straight forward as this or is it more involved?
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    "Stick a V8 in it!"

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    Yeh i think you'd need to log into the immo with VCDS and tell it theres a new ECU, but its pretty easy on the older cars.

    You'll need to check they both use the same ECU though, as they changed them a few times over the years. N and P should hopefully be similar though.
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    jbh
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    yea spoke to Adams24 about it hes told me what to look for.
    my N reg has the map sensor built into the ecu so when I pick the new bus up today ( the P reg ) ill get a look at the boost pipe and see if theres a map sensor there or not.
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    jbh
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    while were on the subject of swapping stuff over.. are front fog lights plug and play? or do I need to swap relays or anything?
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    You will need a new front bumper fitted with fogs, 2x side trims/plastic bumper guides... I have a complete fromt bumper if you need in good nick- of course it will need painting in your own color. Do you have the fog lights built into the headlights ? They are there if the lights are made by Bosch...
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    jbh
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    Quote Originally Posted by adamss24 View Post
    You will need a new front bumper fitted with fogs, 2x side trims/plastic bumper guides... I have a complete fromt bumper if you need in good nick- of course it will need painting in your own color. Do you have the fog lights built into the headlights ? They are there if the lights are made by Bosch...
    what color of front bumper have you got Chris? ive got the facelift front bumper with fogs on the N reg so was wondering if I could have swapped the fogs onto the potential purchase
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    you need the SKC from your car

    Immobilizer I ECU Swapping - Ross-Tech Wiki
    Please contact Admin if you wish to advertise your business/services on the forum

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    jbh
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    Quote Originally Posted by craigynett View Post
    you need the SKC from your car

    Immobilizer I ECU Swapping - Ross-Tech Wiki
    is that the 4 digit code? does it come on a black tag with the car when its new with the mad plastic key?
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    No need for SKC when adapting new ECU to the car, the SKC is needed ONLY if you swap the instruments in the cars with Immo2 or immo3. Your early a4 might even be a Immo1 which means the immobilizer is in a separate box...
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    Yes it is. If you haven't got it then get someone to extract it from the dash or ecu. Can be done with vagtacho or other key programming equipment
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    jbh
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    Quote Originally Posted by craigynett View Post
    Yes it is. If you haven't got it then get someone to extract it from the dash or ecu. Can be done with vagtacho or other key programming equipment
    believe it or not... ive got it on the quattro.. 2 remote keys 1 service key. the plastic key and tag. was pretty amused by all that
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

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    Click on the Ross-tech link I posted above. It says you have to login to immobiliser or instruments to adapt new ecu
    Please contact Admin if you wish to advertise your business/services on the forum

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    Quote Originally Posted by craigynett View Post
    Yes it is. If you haven't got it then get someone to extract it from the dash or ecu. Can be done with vagtacho or other key programming equipment
    Trust me, you don't need SKC for adapting ECU on immo 1 or 2 in the 1.9Tdi ! Americans never had the b5 with the 1.9 tdi engine so they don't really know how it works, just do as on the link on ross tech page and it works first time, every time ! Go to instruments, adaptation ch 00, read and save, then switch ignition off and wait for a minute. Repeat if necessary and also do exactly the same in the engine's ECU, adaptation, ch 00 read and save. Clear fault codes and you might have to cycle ignition on and off a few times. You know when adaptation is successful when the Immo light goes off when you turn ignition on without starting the engine ! I have been working on vag cars for a long time, there's little i don't know about them...
    Last edited by adamss24; 8th January 2014 at 07:36.
    jbh likes this.
    FOR SALE:
    -Golf mk 5/audi a3 1.6 FSI fuel pump, brand new genuine part boxed + seals
    -audi a3 (1998 to 2003) genuine clutch slave cylinder to fit 1.6 engines BRAND NEW
    -Rear bush press tool to fit new rear axle bushes on Golf Mk3/4, Audi a3/S3, Seat Leon/Toledo, Skoda Octavia mk 1/2 used once

  15. #14
    jbh
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    Quote Originally Posted by adamss24 View Post
    No need for SKC when adapting new ECU to the car, the SKC is needed ONLY if you swap the instruments in the cars with Immo2 or immo3. Your early a4 might even be a Immo1 which means the immobilizer is in a separate box...
    youre correct Chris both of them are Immo1
    I forgot to have a look at the boost pipe to see if it had the MAP sensor.
    I will check this in a bit and update you.
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

  16. #15
    jbh
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    Hi Chris. after a look under the bonnet both look the same. both have the early maf plug and no MAP sensor on the boost pipe.
    so do you reckon I should be good to use my mapped ecu in the new car?
    1997 A4 Avant 110 TDi quattro
    1996 A4 Avant 110 TDi breaking

 

 

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