anybody know what this is and what it does?
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#10
5yr member, joined 2001
You'll need to keep it if you have a catalytic converter.
The ACV derects air from the airpump, so if you eliminate it, then also either unplug the airpump or eliminate the airpump.
The ACV derects air from the airpump, so if you eliminate it, then also either unplug the airpump or eliminate the airpump.