Originally posted by #1RoushZX3
NO ONE EVER ANSWERED HIS QUISTION....IS IT TO KEEP EVAP EMMISSIONS FROM BUILDING UP ON THE MAF
Dude... caps lock. Just say no.
Probably no one answered his question because no one knows the answer. That's a GOOD thing. Drives me crazy when people guess at an answer and come off like they actually know what they are talking about.
I will guess, but at least I am telling you this is only a guess. The hydrocarbon trap is designed to trap hydrocarbons for controlling evaporative emissions. It is not specifically intended to keep the MAF clean although that might be a secondary "fringe benefit".