That is a possibility, it could also be a clogged intake air filter, lack of air flow through the filter would also burn more fuel and limit acceleration.
The Catalytic Converter is an emissions control device on your car and can be disabled (illegally). Your car will still have power if it is broken/disabled but will fail emissions.
No, the vehicle will not only not have more power it will not run properly with converter removed. Secondly it is illegal to remove the catalytic converter.
No.
Yes
Loss of power, and a converter that gets red hot.
Vehicle "bogs" and has no power
Yes
Loss of power, excess use of fuel, and converter will get red hot.
Yes, a clogged converter will rob you of power and speed.
Not likley. You will normally see a loss of power and the converter will get red hot.
Check engine light, low power, poor fuel economy, highly illegal to run without the catalytic converter.Check engine light, low power, poor fuel economy, highly illegal to run without the catalytic converter.
Yes, and you will loose power.