The only real way to do this other than replacing worn tires is to adjust the chassis, which is generally not recommended.
Perform better, no. The air pump helps to clean up the emissions.
Make three consecutive right turns. If they make those turns with you, you're being followed.
Bad ball joint
The more valves, the more air. The more air, the more fuel, more power.
You should drive only when you need to. When you have to drive, it is advisable to have your lights on, obey the speed limit, and don't make sudden turns otherwise the car may skid.
The point of a car amplifier is the make music sound better, so in most cases all amplifier make music sound better.
If you cannot make left or right turns with car , this may mean the steering has a problem. The axle inclination of your steering may be faulty and this would require immediate attention from a mechanic.
Clean it.
The sooner you get car plan quotes, the better.
Get a better head unit, an amp, better speakers.
Can it be removed, yes. Is it legal to not replace or reinstall it, no. Will the car perform better without it, no.
No, it does not make the car run better. Dex-cool is a type of engine coolant most commonly used in GM products.