Manufacturers of cars strive to ensure that their cars perform well
. Even then improvements can still be made in a car by the customers subsequent to its purchase by acquiring some aftermarket products. That however is no reflection on the ability or capacity of the car manufacturers. Cars are mass produced and their manufacturers design their cars keeping in view the requirements of a majority of their customers. However, some individuals or some small groups may want something more from their cars. They would be prepared to spend a little more to get what they want. Some of them install a cold air intake to get more power from the engine. The combustion of fuel in the engine generates power. Air is a necessary ingredient for combustion and its adequate supply is necessary for the combustion to be complete otherwise some fuel will remain unutilized. The engine will generate less power than its rated capacity. Cold air intake brings in sufficient cold atmospheric air into the engine. Cold air has an advantage. Air inside the engine becomes hot due to combustion. Hot air is lighter and the cold air intake brings in cold air which is denser which means there is more of air by weight within a given volume inside the engine. That leads to better combustion and you get more power from the engine for the same quantity of fuel.
Some aftermarket products are installed to impart a distinctive look to a car. Vertical doors are one of these. Unlike the usual doors of cars which open sideways these doors open vertically. The onlookers find it unusual and surprising. These doors can be operated even if there is not much space on the sides of the car. Such doors pose no problem to those who get in and out of the car and it is as easy as in a normal car. As these doors are a comparatively new innovation they give a modern look to a car.
Cold air intakes are available in the market in many shapes and sizes. You can get them as also the vertical doors at automobile ancillary stores. You can also look for them on internet. You can know more about cold air intakes at www.ilovebodykits.com.