People tend to get bent when i say this...
I ran a UNI for a bit, and when I found a bit of dust in the intake, i stopped.
Was my uni bad? Does the stock filter also pass as much dust as the uni? I can't answer those questions. Someday I'll buy another UNI and check it out, as it did seem to help a tiny bit...in fact, the backfire screen and foam endpiece of the UNI (as opposed to the rubber end and multi layer mesh of the stocker) would help airflow all by themselves.
From what I've seen, you might as well run a K&N and outerwears.
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