G37 Coupe V6-3.7L (VQ37VHR) (2008)
2.
Remove the airflow meter sensor from the airflow meter housing.
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It's held on with 2 T20 Tamper Resistant Torx(R) screws.
3.
Thoroughly clean the air filter box and the airflow meter housing.
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Wipe out the entire inside area of the airflow meter housing with a clean rag (see Figure 2).
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Use low-pressure compressed air or a shop vacuum to clean out all dust, dirt, and debris from inside both halves of the air filter box and inside
of the airflow meter housing (see Figures 2 and 3).