Noob here and stumbled across this thread on google.com.
Great thread! I've previously installed my PFC before and had hesitition during idle and normal cruising, after reading that PFC FAQ I'm assuming it's "hunting" cause I didn't install it right. After reading on how to install it, I have a really noob question. What is aircon and demister? I'm assuming aircon = airconditioner and demister = defroster? I'm totally guessing here, please advise.