Gutting cats
06-20-2006, 08:06 PM
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Gutting cats
Ok, I've seen alot of threads on gutting cats. Should I buy free flowing cats or gut mine? Never gutted one. Is it easy or do I have to reweld? Will it effect the o2's, and what kind of gains should I expect? And last but not least, will I still past the smog test?
06-20-2006, 10:14 PM
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You can get o2 Sims for the check engine code set off by the rear o2 sensors. That will take care of that.
Im trying to decide if i want to gut mine and have a pipe welded down the middle inside the cats or if i should just do away with the casing and all and order the Pacesetter Y-pipe when i order my LT's.
Im trying to decide if i want to gut mine and have a pipe welded down the middle inside the cats or if i should just do away with the casing and all and order the Pacesetter Y-pipe when i order my LT's.
06-20-2006, 10:47 PM
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Yea i guess thats true! Since they just plug the little monitor thing into your PCM outlet under your dash, if it reads all clear, it passes! I forgot about that. Its only once the vehicle is 7+ years old or something like that where they start putting the little tester in your exhaust pipe to actually test how much smog is coming out.
06-21-2006, 03:33 AM
#7
in texas 96+ cars are only plugged into the obd port. the guys that inspect my truck knew i didnt have cats or egr and their only concern was if i was throwing codes. i also had to roll down my windows 
i even did it with the cutout open so i was running straight longtube headers. they didnt give a **** 
i even did it with the cutout open so i was running straight longtube headers. they didnt give a ****
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06-21-2006, 11:41 AM
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Originally Posted by TXsilverado
in texas 96+ cars are only plugged into the obd port. the guys that inspect my truck knew i didnt have cats or egr and their only concern was if i was throwing codes. i also had to roll down my windows i even did it with the cutout open so i was running straight longtube headers. they didnt give a ****
i even did it with the cutout open so i was running straight longtube headers. they didnt give a **** 
