what advantages will i have if i take my cat off, and also will it hurt the car?

 

You will **** off the pro-planet people

 

none, except a pissed off engine.

 

y is that

 

the little liberal O2 sensor behind your catalytic converter will start foaming at the mouth cuz you is not bein GREEN!


HPTuners will silence that useless bitch in under 2 minutes.

 

haha will i gain anything from it or should i just leave it alone

 

i wouldnt say youd gain enough to remove it specifically.
especially down in the states where they seem far more **** about emissions testing.

if they arent bad in your area, i would suggest if you were replacing the downpipe at some time....to go catless, as the downpipes on these cars are nasty restrictive, and you might as well go catless when your doing it.

but the gains wouldnt be worth the effort of removing it from a stock DP.

 

so zzp header/downpipe combo it is

 

The stock cat is actually very easy to gut. Simply remove the pipe, take a crowbar and hammer and have at it. When you've had enough for the moment, turn it over and shake vigourisly and stuff will fall out. Flip back over and repeat.

 

it will also sound like crap.

 

Mine does not. Exhaust is louder, it smells pretty bad, but doesn't sound any different.

 

weird. the couple cobalts i heard that had gutted stock cats sounded like a swarm of bumble bees trying to get out of a dryer. but they were not 2.0's, maybe it sounds different on them.

 

Yea definately not on the 2.0's.

Sure, I get more pop's because my exhaust always did that, I guess it's just the way it is made to be.

The best is the redline shifts that HUGE flame ***** come out from.

And every 2.2/2.4 I heard sound like that with just exhaust

 

see i gutted mine and i have that bumble be sound suring accell. not during idle or slow accell but if i tip in a bit it has that sound im curious if its just the noise bouncing around in that empty cat and if it will be better once i put on the catless downpipe.

 

... I was catless for a while... too loud for my liking.
I put a hi-flow spun cat back in, and never really noticed a reduction in power... just a reduction in noise.