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Thread: 2JZ - Aftermarket TB - Stock ECU

  1. #1
    Forum Member 1st year Apprentice
    Join Date
    Aug 2011
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    QLD
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    Default 2JZ - Aftermarket TB - Stock ECU

    Hey guys,
    2JZ-GTE related question here...
    From what I can gather, running a slightly larger (80mm) throttle body on the stock intake plenum should be okay, since JDM run MAP not MAF?
    I know with a larger throttle body the airflow is greater at a lesser amount of throttle, but as far as the stock ECU is concerned; it just responds to manifold pressure? or is a greater reading at the MAP and lower reading at the TPS than what it expects going to cause it to have a fit?

    (and yes, I know that I don't need to; but I have a reason to do this).

    Cheers for any help!

  2. #2
    Forum Member 1st year Apprentice
    Join Date
    Aug 2011
    Location
    QLD
    Posts
    17

    Default Re: 2JZ - Aftermarket TB - Stock ECU

    I should also note I'll be using the stock TPS, so resistance values will be identical; but there will be greater airflow at lower throttle.

  3. #3
    Junior Member Too Much Toyota
    Join Date
    Sep 2005
    Location
    Qld
    Posts
    5,590

    Default Re: 2JZ - Aftermarket TB - Stock ECU

    will be fine with the stock ECU - it only uses the TPS (and thus by inference the size of the throttle opening) for acceleration enrichment, idle and WOT sense. Fueling is based on rpm & MAP (with compensations for air and coolant temps).
    ------------------------------
    ST185 road barge / MZ11 forest barge / RA65 garage barge

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