Just had a PFC installed not to long ago, and the idle seems to dip down while stopping at a light or stop sign..

Just wondering if there would be a way to smooth it out by tuning, or should I be looking for something else that could possibly be the culprit?

The idle "hunts" i guess you can say occasionally...

 

Did you go thorough the 30 minute idle adjustment procedure when you installed the PFC?

 

mine did this all the time when coming off of load. I also about a month later my idle air control valve started buzzing when I left my ignition on it would randomly do this. Steve kan told me this was common and after I left the tune neither were a problem anymore.

Also you can check your throttle position sensor and make sure it is in spec. The pfc is much more sensitive to these things than the stock ecu for some odd reason.