ok...
here's another question..
my car has always ran very very rich..i mean i can't stand behind the car for too long if it's warming up due to how heavy the exhaust fumes are...could this be a strong indication of an o2 sensor going awry?

i don't have any check engine lights on but these are my current symptoms...

1. random hestating/sluggish off the line performance
2. loss of 2-3 miles per gallon
3. heavy exhaust fumes (and i mean make you high and die heavy)
4. burning 1 1/2 quarts of oil 600 miles before next schedule oil change.

also an autozone sales person told me that if i change any exhaust items on the car, that would mean i need to change the O2 sensor too....is this true?
all i have done as far as modifying the car is change out my stock muffler to an arospeed muffler....

please help
thanks

__________________
~there is no spoon~

1984 300CD Turbo Diesel (soon to be "powered by VEGGIE") - dolphin silver

1999 e430 Sport blk/blk, my sexy ***** ;-)

(my other girls)
1992 300CE 24V 3.0L (w124) (R.I.P. "she was killed 7/12/03 by some ricer kids speeding in a honda accord")
1990 Acura Integra RS (w/94' engine)
1966 Cadillac Sedan de Ville (Hardtop)