No, the heat in your vehicle is made from the the heat of the radiator fluid. It dose not take more fuel to use the heater.

Yes you can replace a catalytic converter. No you cannot replace it with resonators. It is illegal and the engine will not run correctly.

A partially plugged cat or exhaust can cause some interesting problems. The easiest test is to put a vacuum gauge on a manifold port. Check the vacuum on a warm engine at idle (probably 15" to 18" mercury). Pop the throttle, revving the engine to about 3000 rpm, and hold the revs steady there. The vacuum should drop momentarily, then climb to a higher number (probably 20" to 25"). If the vacuum stays steady, the exhaust probably isn't plugged. If the vacuum starts dropping after a few seconds, the exhaust is probably partially plugged.

Buddy mack must be either a Advance auto or Autozone employee, or he doesnt have a clue as to what he is talking about.

Bosch plugs are crap for your Maxima. Take care of your Nissan properly and but a set of NGK plugs down in her, if you have boschs in now I gaurantee you will notice a difference straight away.

Put the bosch where they belong in a German made car or the garbage

no.....//...... there one of the better ones...get the platinum ones...bosch plugs are the best ones........buddy mack..

Yes. Go to auto zone and have the codes read for free. And change the fuel filter.

Rotten egg smell? Loss of power?

It'll be mounted to the exhaust pipe at some point underneath the vehicle. That's about as good of an answer as can be given without the make and model.

A converter where the power flow is in both the directions...e.g. If you parallel buck converter and boost converter you can achieve bi-directional power flow...

No

It has no real smell if it is working as it should.

center link owns it

Yes you can, but if you don't replace it with another one such as a Magna Flow or a High Flow Cat, you won't pass emissions If You don't care to pass emissions then go ahead. Don't forget to make it look like you have one or you can get a ticket.

Help clean up vehicles exhaust emissions.

No

If you are running stock exhaust on a motor that doesnt have O2 sensors you will gain horse power. but on a newer vehicle the motors ecm relies on the reading of the sensor to run properly

50%

Yes, it can damage the engine.

If one is referring to a situation in which a vehicle does not pass a smog inspection, there might be several causes. One might be the catalytic converter or an old gas cap.

Hard to start, loss of power, poor fuel mileage.

Best way is to replace the pipe from the header back past the cat, it sold this way from most parts houses and is the fastest and easiest way to replace the cat, you can also buy the cat separate, then cut out the old one and weld in the new, but that is more work than is necessary.

check for damaged parts loose connections oxygen sensors and catalyst convertor

If everything looks intact and that is your only code, you probably have a failing catalytic converter.

Catalytic converters contain something called platinum or rhodium or palladium flakes. Here is a quote from the Related Link: "Catalytic converter -- an integral part of vehicle emission control systems since 1975. Oxidizing converters remove hydrocarbons and carbon monoxide (CO) from exhaust gases, while reducing converters control nitrogen oxide (NOx) emissions. Both use noble metal (platinum, palladium or rhodium) catalysts that can be 'poisoned' by lead compounds in the fuel or lubricant."

1975