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Thread: Pre-catalyst flow and temperature drop

  1. #1
    Tuner in Training
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    Pre-catalyst flow and temperature drop

    Looking at the difference between 157 and 278 the pre-catalyst tables are very different.

    Using 157 pre catalyst tables prevents CEL with downpipes or with high flow cats iirc.

    Is this safe to use?

  2. #2
    Advanced Tuner outlaw_50's Avatar
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    could you post a picture or reference number of the table in question?
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  3. #3
    Tuner in Training
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    Ecm 15905 15810 15811 14861 14862