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Discussion Starter #1
Where would the best place to install a cat on the 2.3 pzev?
Do you think the high flow flex cat would fit from like CFM??
 

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The best place for it would probably be where the second cat is. A high-flow cat should fit fine, as long as you get it with the proper size, but you may need an exhaust shop to weld a flange on so it bolts to the flex.
 

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Discussion Starter #3
Thats what i was thinking to just buy that and drop it off at the shop. the flex cat is what ill probably do. ill keep u posted....
 

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In California, IIRC, you can replace your catalytic converter if it was damaged beyond repair (and not "oh no! someone bashed my cat in with a tire iron in the parking lot of this performance shop!" damage). It must be replaced with a certain type of aftermarket cat, which don't flow as well as high-flows.

Edit: Those of us in the wondrous flyover states can replace cats with anything we feel like. Some states will even allow straight-pipes, as long as your car passes hydrocarbon testing.
 

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I love Alabama... Mine is straight off the stock flex right now, but soon it will be straight all the way down...
 
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