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Drive by cable 3.8 ecu models

Dohcwp Jun 6, 2018

  1. Dohcwp

    Dohcwp Setting the Standard Team Silver Audi A3

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    So after going through some self study guides on the Me 3.8 cable driven models this weekend i have found out that AGN's have VVT (im assuming like the APY s3's) but strangely AGU's dont

    agn vvt.jpg


    Also the 3.8 Ecu's do have a can gateway contrary to popular believe as the 01m automatic transmissions like mine communicate via canbus as well as the abs system and comfort module. which means its probably not that complicated to get a dq250 dsg hooked up to a automatic agu or agn as its already communicating via the can gateway.

    01m.jpg


    so what interested me was cruise control as almost everyone keeps saying that to retrofit cruise control on a cable driven model is almost impossible, but apparently its not.

    what you'll need is a CC stalk, the harness (same as the E throttle models) and a cruise control throttle body

    cruise control cable throttle.jpg

    for the AGU cruise control throttle body the part number is 06A133063F

    the cruise control doesn't work with a vacuum system as most people made it out to be, there is a stepper system in the throttle body that locks into place when the cruise control is activated.

    throttle body.jpg


    so to install you wire up the stalk and harness as in this awesome guide by Endecy
    the best ecu pinout i found was for the AGZ V5 engine that runs on the same 3.8 motronic ecu's as the pre facelift a3's and golfs

    motronic 3.8 cc.jpg

    the ross tech site is a bit vague on whether coding is required to enable cruise control on the ecu or not, im guessing it wont be needed as none of the guides mention anything about coding

    I have already ordered my stalk and will update further once i have all the parts to install cruise control on my AGN.
     

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    Last edited: Jun 6, 2018
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  3. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    You assume incorrectly... APY s3's didn't have VVT, AMK/BAM did along with all 20v engines circa 2001 on... was used for emissions essentially...

    <tuffty/>
     
  4. Dohcwp

    Dohcwp Setting the Standard Team Silver Audi A3

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    so was the AGN the only pre 2000 model with vvt ?
     
  5. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    Pass... lol... would have been on the cusp of the change over I would imagine

    <tuffty/>
     
  6. badger5

    badger5 www.badger5.co.uk Site Sponsor

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    pretty sure ~I have seen an ADR smallport with vvt also (ADR seen in small and largeport... just to confuse thing even more))
     
  7. S3Powerxz

    S3Powerxz Member

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    From where are these diagrams?
     
  8. Erikn89nl

    Erikn89nl Well-Known Member

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    I was wondering that too, looks like an official manual type document, and a very interesting one at that!
     

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