sq ecu

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  • urs4quattro
    S2Forum Enthusiast
    • Dec 2006
    • 100
    • Country: Northern Ireland

    #1

    sq ecu

    Sport has 2 ecu's doesn't it?

    What does each one control?

    Think these are p/n's:

    035 905 383 M
    859 906 264
    1990 urquattro 20v
    2006 A6 Dagger
  • Billman
    S2Forum Freak
    • Nov 2004
    • 4129

    #2
    One injection the other ignition?
    Go Holset or Go RS4

    Comment

    • garym
      S2Forum Enthusiast
      • Jun 2005
      • 106
      • Country: United Kingdom

      #3
      ecus

      035 905 383 engine ecu controlling ignition boost ect 859 906 264 controls k jetronic

      Comment

      • garym
        S2Forum Enthusiast
        • Jun 2005
        • 106
        • Country: United Kingdom

        #4
        ecus

        sorry 2nd one controls lh jetronic

        Comment

        • S2central.net
          Retired OG Mod
          • Jul 2003
          • 16590
          • Country: Northern Ireland

          #5
          Am no expert on the KW engine but that sounds believable - Bosch LH in one, everything else in the other.
          Paul Nugent
          Webmaster http://S2central.net
          Administrator http://S2forum.com

          1994 S2 Coupe ABY - aka Project Lazarus
          2001 A6 allroad 2.5TDi - family tank
          2003 S4 Avant 4.2 V8 - daily burble

          Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

          There are only 10 kinds of people that understand binary - those that do, and those that don't

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