If you put in a new cat are you sure its not the problem? Some ECUs don't have enough adjustment range to deal with different types of cats, so your O2 might be sending the wrong signals.

cats new. had it double checked too.. its fine.

Filter is fine.. its brand new.
Pump is good as gold.

im only getting like 258k's for a tank of gas.. i should be getting what my friends are getting with their civics... like 400ish
lmao.

but could my exhaust also have something to do withit?
header back two and a quarter.

Sounds like a vacuum leak....

??
why would you say that ? ( i am still learning )

make sure your tires aren't mounted incorrectly. I had a broad come in with the exact same complaints, and her tires were on backwards. fixed it up and she was good to go.

when you changed the exhaust did you check or replace the muffler bearings? They fail often on the ol EGs and can cause similar problems as you're having.

Hope that helps

for what car? if its eg civic, i can "guess" its the coil/ignitor that is going on your car, my crx use to do that too. try changing the whole dizzy, or individually change the coil and ignitor in your dizzy. its a common honda problem.

funky driveability and shit mileage? i'd be looking at the O2 sensor.

wouldn't be telling your ECU the proper info which would cause it to possibly compensate for a condition that doesn't exist, and would also mess with your mileage as it might be dumping in extra fuel that it doesn't need to.

1990tsi - thank you i got header back with new exhaust and muffler. it was all done custom and they knew what to do.:)

zero one - thanks but i already stated that my dizzy was fine

raid3n - thank you very much im pretty sure it was the o2. just filled the tank up again and we'll see what happens

Check engine light still hasnt come on.

check your oil cap to make sure there aren't snakes in your valvetrain, 9/10 times that can cause poor mileage and missfiring issues.

LOL.

O2 then.... borrow one from another friend if possible.

AHAHHAHAH!

I already baught an 02
retail...250... my cost 62.00 ahahha

That's not the point, the point is, has your car recovered by installing it?

Yes, thats what i tried to state without being rude.
so far so good.
Im going to wait and see till my tank is empty and see how the milage is.

As for the pedal... its not sticking anymore which is strange ( after the 02 ) , and as for it lugging in D3 or D4 , its fine now.

LOL

Anyways thanks for the help guys...
whiteboys and their "muffler bearings" gotta love it.
jj

Seems like the problem is all fixed!