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Old 08-27-2004, 12:18 PM   #3
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Join Date: Jun 2004
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Location: Ohio
What I Drive: 2004 Liquid Grey ZX3 PZEV 5Sp.

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I put my trap back in after initially removing it. After trying to think of a good reason why it was placed between the throttle body and the MAF, the only reason I could think of was that its meant to protect the MAF from fuel vapors. If the reason were for solely evaporative emissions, then the massive air filter element would seem to be sufficient. Also, the MAF's position in the MAF tube would seem to disturb the airflow and the trap honeycomb looks like it would correct that before the air enters the throttle body. I also left the honeycomb in the bottom of the MAF tube on the assumption that it is meant to evenly distribute the air flow to the MAF sensor. I would be very interested in hearing an opinion from anyone with experience in measuring air flow.
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