the cobalt is running a little more sliggush than usual in lower rpm range. There is not a check engine light nore a loss of mpg so a little lost as to what the issue is. Vehicle is a little over 90k. Aside from plug change, is there preventative maintenance i have over looked?

 

Hows the weather? On warmer days my car feels like im riding a snail. On cooler days my car chirps first and second gear

 

maybe a clogged cat? ...I think mine may be pretty clogged, no cel but I just have a feeling. Damn GM stg2 kit runs rich as ***.

 

i will say that previous to the cat finally making noise on mine, that about a couple months previous my cars idle seemed a little weird and it could be said the low end didn't feel as peppy. not excessive, just felt kinda funky.

after i got the downpipe, the car felt alive again in the lower rpm's.

 

runs the same hot or cold outside temp. i was thinking cat as well but its only low rpm and the idle does not seem to have changed.

 

last time you changed your fuel filter?

 

prob. 10k ago. dont got my maint. book on me.

 

what brand tool did you use to change the filter?