wow yup thats the problem. when i gun it, the car drops and takes a sec to actually go or it could just be the lag of a sohc. but w/e chances are its my cat and well its going to get better after i fix it. tx :57:

if the cat is fully clogged, the car will not run.

the chances of getting a fully clogged cat is about 0 but you can get a cat cloged enough to cause a problem and make way too much back pressure and that will cause problems

in order to "clog a cat", the car will need to have run incorrectly for a great amount of time. The only thing that will ruin it is excessive heat and or fuel. the only way to do that is to run around with a misfire for a while, which would be completely noticeable to anyone driving the car.
im afraid that catalytic converters just dont "clog" anymore due to modern fuels and injection systems.
They can and do wear out, and can fail in other ways, however. It would also trigger a "check engine" light for many different issues, from misfire, to a failed cat, to incorrect fuel trims, etc.

well guys sry to say it but my car was just totaled 2 weeks ago by some **** running a red light :crying:. so with that i guess ill never know for sure if my mpg would have gone up or not. n e wayz if n e one wants to pitch in some money (lol) for my next car i would really apprciate it. if n e one can tell me a way of picking up donations from ppl online that would be nice to know too please.

it was my first car and i loved it, even with its lil 120 ponies i still wasnt going to sell it for my next car. but thats out the window now. o well...

im looking for an 05 MR but with a budget of $15,000, theres no way im going to find one that cheap with low miles.
tx for all yalls help and ill still stick around i guess and help anyone out with w/e i can.
l8rs