RUNNING LEAN !!!!

[SUTHRNSTANG97GT]

I need some help, my stang has been running kina sluggish and after idleing like at a stop when I give it gas some smoke comes out and the fumes are real strong, so today I pulled the plugs and they where white so I swaped them out and added a new left rear O2 sensor and mil eliminator. Well its running smooth and alot better but i'm still getting the fumes and smoke, its just a matter of time before I will have to replace the plugs again. Any suggestions please.

 

[19mustang95]

if the fumes are strong, you are running rich...i would put it on a dyno that does a/f ratios to see whats up.