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Ämne: OG900 (Lucas) with DI

  1. #1

    OG900 (Lucas) with DI

    Hi!

    I don't know the right Swedish keywords to use when searching (DI is too short), so can anyone link me to some discussions related to this modification?

    I hear that the RPM signal produced by the DI unit is incompatible with the Lucas EFI?

    The DI set I have is the separate DI+APC from a M88 9000CD.

    Tack så mycket.. ;-)
    Saab 9-5 Aero Wagon '02
    Saab 9000 CC 2.3T '92/'96
    Saab 900 2D T16 '89/'91
    Saab 900 4D Finlandia T16A '82/'90

  2. #2
    Steg 2
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    Hi!

    I guess you have read this link?
    http://www1.shellkonto.se/patriko/saab/di.html

    It seems that the RPM signal on the lucas cars is different from the LH ones making the idle problematic when DI converted. So you'll have to let the old distributor still be in place so that it can give the proper RPM signal to the Lucas ECU.
    Saablös FD OG900 "Aero" Cab & NG900 E85 421 hk
    Impreza STI Type R -00 370 hk 460 Nm @ 1320 kg Vevlagerras!
    BMW 525i Touring -95 Mit sperrdifferential
    BMW 740iA -00 Highline Carbon / Individual

  3. #3
    Thanks! I hadn't found that link.

    I was actually wondering if leaving in the distributor would work.

    It looks like a good temporary solution until I can borrow an oscilloscope and see the ignition signal differences for myself.

    It is probably solvable with a relatively simple electronics circuit, it seems inverting the signal might be sufficient.

    Thanks again for the quick help. :-)
    Saab 9-5 Aero Wagon '02
    Saab 9000 CC 2.3T '92/'96
    Saab 900 2D T16 '89/'91
    Saab 900 4D Finlandia T16A '82/'90

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