Yes, legally and for the computer to function correctly you will need a catalytic converter.
Legally you can only replace a catalytic converter with another catalytic converter.
Legally a defective catalytic converter must be replaced.
Absolutely not. The fumes released from any engine can be deadly without a catalytic converter and severely harm the environment no matter how efficient the engine is and no car can legally not use a catalytic converter.
You don't not legally anyway. You could put in a straight through exhaust line, but if you're caught you could be severely fined.
You'll have to remove the catalytic converter and Y-pipe and go with straight pipes with individual mufflers. Legally you can't remove the converter unless you're replacing it, which you'll need two if you're planning on true duals (to be legal, that is)
Legally, yes. Functionally, no.
Not legallyNot legally
Legally, yes.Legally, yes.
maybe a little trouble with the law (legally your supposed to have one on it) but my 95 GMC runs fine without one (had it removed when i put a performance exhaust on)
Not legally and not with out the check engine light coming on and staying on.
Not legally, but disregaring the law,a catalytic convertor can be removed from any vehicle.
Not legally, not with out setting the check engine light, and not with out negative performance issues.
If you remove it. It won't PAST Emission Inspection Legally.
You legally you need the entire exhaust system including a Catalytic converter that complies with Emissions laws of the state that you live in unless your car is 25 years or older. After 25 years you no longer need to have your emissions tested. So at that point you could basically drive around with no exhaust unless your causing noise complaints.
you can. but not legally The check engine light will also be on.
A cat back system is simply all exhaust system components like mufflers or pipes which are attached 'after' or 'back' of the catalytic converter. Here is the twist... it is quite possible for a cat back system to also be a true dual exhaust system if there are 2 separate catalytic converters, each with its own exhaust system components behind it. Then a cat back system in this particular instance, would still include the components being replaced 'after' the cats. The differences arise when there is a single catalytic converter but with split or dual exhaust components after it. From behind the car, the dual exhaust pipes make it look like the car has dual exhaust, but in actual fact it only has one pipe leading to the cat converter and then has 2 sets of exhaust components 'after' it. Again, any cat back system could be either single pipe and component or dual pipes and components. Most cat back systems were created to allow use of the legally mandated cat converter while freeing up exhaust flow after the converter.More answers:Cat-back is simply a strait pipe from the cat back. The difference is a dual exhaust can still have mufflers on the pipes.Cat-back means whatever exhaust that is dual starts at the cat. Dual starts at the manifolds and duals all the way back. You could have cats in duals if you wished and spent the big bucks.Cat back" exhaust is all the pipe and muffler(s) from your catalytic converter to the tailpipe. it is a must in emissions legal vehicles to avois a ticket if your replacing your factory exhaust. however "true duals" are very cheap and are nothing more than a pipe from the manafold or header, to the tailpipe, no mufflers or cats.
Legally yes. as far as do you need it for the turck to run...no get you a delete pipe and enjoy the now sound and better mileage.