With your Low-beam on during night driving, when you pull the head lamp lever towards yourself to "flash" your hi-beam(when seeing leng lui or going to overtake or etc.), does your Low-beam...
I'm curruntly using a stock FD ECU. Did CO check and found out my FD is running on very rich side on idle. Did smell some feul during idle but no black smoke thou.... I do have a exhaust temp and on...