Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: S to JCW engine swap

  1. mrntd

    mrntd Well-Known Member
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    #2 mrntd, Aug 8, 2013
    As long as your swapping you should add an LSD. With the JCW set up you can quickly generate more power than the open diff and tires can handle.

    From what I've read the main difference in the first gen motors is the head, sc, injectors, cat back, and intake. So there shouldn't be anything that would be wrong physically. The ECU may be a different matter. I think it has to be matched to the body control computer.

    But I'll let others that more than me chime in.
     
  2. Dave.0

    Dave.0 Helix & RMW Powered
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    #3 Dave.0, Aug 8, 2013
    Make sure you get the BCM and ECU and you my need the ignition key cylinder so everything is coded correctly.

    FYI your VIN will not match for emissions, if your state has emissions.
     
  3. Mini Dad

    Mini Dad New Member

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    #4 Mini Dad, Aug 8, 2013
    Is it not possible to have my current BCU reflashed by the dealer to recognize the new ECU?
     
  4. Crashton

    Crashton Club Coordinator

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    #5 Crashton, Aug 8, 2013
    ^^^ I don't believe so.
     
  5. Mini Dad

    Mini Dad New Member

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    #6 Mini Dad, Aug 8, 2013
    Looking back at some of the information I received it says that the engine comes with the "ACC" and "EBX". Now, I think the ebx is the engine computer. Is the acc the body control module (Accesory Control Computer...???)?
     
  6. beken

    beken Well-Known Member

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    #7 beken, Aug 13, 2013
    If I remember correctly, the engine computer between the Cooper S and the JCW is just programming. The dealer simply activates the JCW profile on your existing ECU.

    In 2002/2003 the JCW engine was a retrofit. That means, you buy a Cooper S and the upgrade was a dealer install. The kit included supercharger (reduced pulley and teflon bades), engine head (ported and possibly a different cam profile), exhaust, and a different intercooler cover.

    Other options would include suspension (red springs) and struts, as well as a 2 piston brake kit. The JCW brakes would become the standard brakes for the R56 generation.
     
  7. agranger

    agranger MINI of the Month June 2009
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    #8 agranger, Aug 13, 2013
    From MotoringFile: MotoringFile » Archive » The History of the Modern JCW Tuning Kit

    If you look at RealOEM.com, you don't see an ECU in the JCW parts package, so I think it's just a software reflash at the dealership.

    RealOEM.com   BMW R53 Cooper S JCW Tuningkit 210 HP

    RealOEM.com   BMW R53 Cooper S JCW Tuningkit 200 HP
     
  8. ChItalian1027

    ChItalian1027 Member

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    #9 ChItalian1027, Aug 30, 2013
    Doesn't the 02-06 JCW have the W11 motor as with the MCS?
     
  9. Crashton

    Crashton Club Coordinator

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    #10 Crashton, Aug 30, 2013
    Last edited: Aug 30, 2013
    Yes it does with the differences noted in agranger's reply.
     
  10. Nathan

    Nathan Founder

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    #11 Nathan, Aug 30, 2013
  11. Way Motor Works

    Way Motor Works New Member

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    #12 Way Motor Works, Aug 30, 2013
    You can't put the used ECU in your car as it won't work with the other computers. But you can put the JCW flash on your existing ECU. If you need you can ship your ECU to us and we can put the JCW flash, or another tune on it for you.