what would cause my exhaust to be raspy when i just turn on the car, but when the car warms up a little bit, the raspiness goes away...

and also, my exhuast has a bunch of "black dirt" on the inside of it and i took of my silencer and there was just a bunch of black dust accumulated behind it...

any help is apprecitaed thanks!

 

Um... the black stuff is exhaust residue. Every car has it.

 

ok, i just wanted to make sure im not running dangerously rich, anything on the raspiness at low engine temps?

 

the black stuff could be some of your cat being burnt off. I had several chunks of burnt car behind my silencer once. but I think that had to do with the several back to back country road excursions in VTEC . Pulled the cat and I could see through it partially, still passed WA emssions 8 months later, go figure lol!

 

o2 sensor need replacing...? Whats your gas mileage like?

 

25 ish