its depending on where you live. if you live somewhere where you don't need inspection done to your car then you don't need it.
not really, as long as it is at the right temperature, it will not be affected
Your catalytic converter is at the top of your motor at the exhaust manifold take out the 4 14mm screws that connect your converter to your manifold drop down out the bottom of engine and replace another really simple fix
There are no differences. High flow catalytic converters are not really high flow; the catalytic converters you have on your vehicle are as high flow as you need them to be. A "high" flow converter will either be of a larger diameter, or the inside is made in such a way that there is less restriction to exhaust flow.
This really is a job best performed by a muffler shop.
YES IT WILL
It will really mess up the fuel mileage,and driveability
Should you cut off the catalytic converter? No. But can you and will SOME vehicles actually benefit? Yes. It is illegal to remove any emmision control device from your vehicle in most if not all states. For countries such as Mexico where it is not illegal, some vehicles without downstream Oxygen sensors (after the catalytic converter) it can have some benefits. It is really the same benefit as a free flowing exhaust. Modern (97+) cars already have a free flowing design catalytic converter so there is no benefit to doing this.
A clogged converter will cause an extreme loss in power, poor mileage, and hard starting. If it is clogged really, really, bad it may cause the engine to not even start.
Yes and no. It will smoke more at start up and if you really hammer on it. But just cruising down the highway no.
The catalytic converter is probably bad. It really isn't a big deal unless your car has to have emissions tests.
It is never going to run right with the converter removed. It is also illegal to operate a vehicle with the catalytic converter removed.
It really depends on the kind of auto repair you need they can cost anywhere from $75.85 to remove an alarm to $1,001.74 for replacing a catalytic converter.