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  1. fix for intake po-171 air flow code

    2010-13 Mazdaspeed 3 Engine and Performance
    HoneyComb MAF Mass Air Meter Airflow Straightener- TREADSTONE PERFORMANCE MAF Mass Air Meter Airflow Straightener will cure problem specially with short intakes; if they do not come with a airflow straightener., install close to MAF sensor for best result