My Saturn L100 still has a really good engine and a reliable transmission even if it's a little old already, so I'm thinking of adding a little power to it. Can you give me any inputs?

The changes you can make with your vehicle for that added power largely depend on how much extra horsepower you want and the extent of change you are willing to take. If you want to keep the existing engine because it is still good, you may get a power boost with the aid of a supercharger, which can add about 30 to 50 horsepower to what the engine normally generates, depending on the type of supercharger you choose to have. It works simply by supplying the combustion engine with more air to mix with fuel for better power generation. For an increased torque and to make the best out of this add-on, you can also upgrade your exhaust system with an intercooler. Remember, though, that the combination of supercharger and intercooler will force your engine to consume more fuel.

I want my engine to have improved performance, but I don't want any additions or alterations with the vital parts that are under the hood. Is there any way I can do that?

You will get only a limited improvement if you don't want any changes with your engine, but you can, of course, try other alternatives. Have you heard about performance wheels or the use of shorter wheels rather than the factory-installed ones? You'll usually find such an alteration with race cars or those for used for drag racing. Lighter and shorter wheels require lesser horsepower in order for them to spin faster, so you get better speed with the same amount of power consumed. You can also work on the aerodynamics of your Subaru L100. Improved aerodynamics is basically the result of a decrease in air drag, resulting in better movement while the vehicle is running on high speeds. As you see, this force holds the forward movement in about a square of the speed of the vehicle, which means that as you hit higher speeds, the aerodynamic drag also increases. However, this is not the case with cars that have a more streamlined body. Common sedans can also achieve that by installing air drag-reducing accessories such as window air deflectors, spoilers, or even a full body kit.

I'm planning to get a power boost for my L100. Will you help me decide? Which is better to use: supercharger or turbocharger?

With newly released sports cars, you will notice a turbocharger or twin turbocharger. Although, both power boosters can generate higher charge and torque, they don't work in the same manner. The belt-driven supercharger is directly dependent on the engine, sapping first significant power before being able to create a power boost. The turbocharger, on the other hand, will run only with the use of the engine's exhaust or waste. Fuel efficiency is then better with the turbocharger, but you will still be the judge.

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