59 camaro

iTrader: (29)

sup, well i have a bone stock 06 ctsv and just when i was going to smog it the check engine light turned on, it says bank1 p0420 from what i remeber... anyways, my friend told me its a bad cat... i have a set of kooks and high flow bassani cats i was going to install after it passed smog.... if i mount the high flow cats on the stock manifolds will it pass smog? anyone know? thanks

Gary Wells

My guess is that it should not pass on both visual & emissions, but that does not mean that it won't pass. I would suggest considering a pre-smog before doing the actual smog.
It could pass the emission portion and the 2 ways might be overlooked on the visual.
Best of luck.

CaliboyTA

iTrader: (2)

Depending on the tech guy who its doing the smog. My.friend was getting his STOCK 02 ss smogged and the smog tech was giving **** because the tech said his STOCK cats are not california compliance cats

lowerthanyou00

iTrader: (8)

Random Techs will pass emissions not visual, but I imagine any quality high flow cat will pass emissions on a reasonably unmodified car.