ok about 5 months ago i had to get my car smog checked because i moved to cali. my car failed horribly because the o2 sensor was burned up and it had not thrown a code yet. anyway, ford replaced it yada, yada, yada.
well now my car is producing the same exhaust smell as it did when the o2 went bad and i think the milage might be dropping a bit. i'm pretty sure the dealership will replace it again but i'd like to know what's causing this.
my engine mods-
cam gears
street header
hi-flow cat
tb
flex-pipe
catback
diablo chip
udp
intake
well now my car is producing the same exhaust smell as it did when the o2 went bad and i think the milage might be dropping a bit. i'm pretty sure the dealership will replace it again but i'd like to know what's causing this.
my engine mods-
cam gears
street header
hi-flow cat
tb
flex-pipe
catback
diablo chip
udp
intake