yes
for any car to get better gas mileage get a better flowing intake and/or exhaust or get it tuned
Factory installations look better.However you get what you pay for.You can spend a lot of money and get better systems than come with the car.
The factory installed alarms are normally better and more reliable that aftermarket type.
You can get your car tuned up at your local mechanic or at the dealership. Depending on the cost you are planning to spend depends on which place you will want to take your car to.
You'd have to define "better", and also exactly what you're seeking - we don't know if you're trying to deal with squealing noise, grinding noise, etc. or you want your car to sound more tuned.
Did you mean "Corvettes"? Are you educated beyond the first grade? The answer is no, Vipers are better. A Dodge Viper always will be better with speed and looks! Don't listen to the idiot that made the first answer. your question is comparing a highly tuned, engineered, and constructed American sports car to a dumptruck. the Corvette will destroy the viper. and I don't remember looks ever being a factor in how a car performs but since you mentioned it, the Corvette looks much better than a dumptruck disguised as a clown car.
Make sure that your tires have the same air pressure. Keep the ac low or open the windows if it is not too hot outside. Change your oil and get your car tuned.
Yes but it will make it run rough unless you get it tuned down for a lesser grade.
Yes, an iPod Touch is better than an RC car (in my opinion).
If it has parts that wear, yes.
There were quite a few good cars in 69 and it's all in your preference, the yenko camaro with a 427 was one of those cars that would beat about any factory built car on the road.
I hear it better in a car