You can easily increase the output power of your engine with the use of a throttle body spacer. They are a quick, inexpensive, and easy to install
way to get the most out of your car’s engine. The throttle body spacer adds extra room in the plenum of the motor where the intake air after passing through the air filter is directed to the combustion chamber. The goal of ideal combustion revolves around having a perfect air to gas ratio, known as the air-fuel ratio.
The air-fuel ratio has three possible outcomes. The first is to run what is called “lean”. This occurs when the there is too much air and not enough gas, so after combustion occurs in your engine there is too much nitrogen and the explosions are not forcing the pistons up to their full potential. The other extreme is “rich” combustion, which occurs when there is too much gas. Oddly this type of combustion is cooler because of the soot that is generated absorbs heat. It is also undesirable because of the soot, which can clog your engine and corrode nearly every moving part inside.
The desired air to fuel ratio involves a perfect balance between air and gas, mixed very well. It generates very little soot, and maximizes the explosive combustion power. This is where the throttle body spacer comes in. The extra room allows the air being taken in to mix better with the atomized fuel. It is equivalent to adjusting the carburetor on a two-stroke engine; more air can mean better explosions and more power output. The spacers are also often designed to increase the turbulence of the air before entering the combustion chamber. The turbulent air helps homogenize the air/gas mixture, which ensures that every last molecule of gas combusts. Some spacers even spin the air, rifling it to enter the chamber violently to mix with the gas.
With cleaner combustion you will save gas by burning it more efficiently. Higher fuel efficiency saves you money and is clean for the environment. Throttle body spacer modifications are easy to perform and a car hobbyist should have no problem installing one onto their car’s engine. You will need to remove the air box, and separate the air intake manifold. Detailed instructions will likely come with any throttle body spacer you order, or can be found online with video walkthroughs. The real upside to this modification is the simplicity, you really don’t have to take any of the motor apart, only the air intake components, and so the risk of doing damage to your expensive hardware is slim.
The throttle body spacers cost between $70 and $150. If the spacer improves your fuel efficiency it can literally pay for itself in a small amount of time by saving on your gas bills. I suggest ordering them online because you can make sure the model you order fits the car or truck you are trying to modify. You can also find reviews which should help you discern which spacers actually report fuel savings and power increases. You can browse different throttle body spacers here.