How to Compare Turbochargers and Superchargers

Although turbochargers and superchargers have a few aspects that differentiate them, both are called "forced induction systems." This means that they both compress air flowing into the car engine cylinders for the purpose of boosting power. However, each system has its advantages and disadvantages, so it's good to be able to compare both systems.

Instructions

Difficulty: Moderately Easy

1. Know the charger's power supply source. Turbochargers get their power from the exhaust stream, which spins the compressor by running through the turbine. On the other hand, superchargers have a belt that is directly connected to the air compressor.
2. Compare the ease of installation. Superchargers are generally easier to install than turbochargers because they have fewer and simpler components.
3. Examine the costs associated with each system. Superchargers tend to be more expensive than turbochargers.
4. Understand the efficiency of each system. Turbochargers are known to be more efficient than superchargers because they use the energy that is otherwise wasted by the exhaust stream.
5. Compare the boost power of both systems. Turbochargers tend to have less boost because there is a certain amount of back pressure in the exhaust. However, the boost will increase once the engine is running at more revolutions per minute (RPMs).
6. Consider the amount of heat subjected to the system. A turbocharger can get more heated because it is attached to the exhaust manifold, which gets very hot. A supercharger, on the other hand, does not have this problem.
7. Examine the noise levels. The turbo tends to be less noisy because its turbine is contained within the exhaust.
8. Compare the tuning needs of both systems. Turbos require more tuning than the supers because they rely on exhaust pressure. Superchargers may require a few fuel and ignition upgrades, but rarely any tuning.
9. Measure power output. Turbochargers can produce more peak power than superchargers because of their ability to sustain higher RPMs.

Tips & Warnings

• Both turbochargers and superchargers can increase your engine's power by about 50 percent.
• Choosing the proper system for your engine depends on your driving habits and your power preferences.
• Novice mechanics tend to appreciate the supercharger because of its simplicity compared with the turbocharger, which is more often seen in specialized cars and automotive markets.
• Consider carefully the make and model of the vehicle you want to boost when deciding between the turbocharger and the supercharger. A certified specialty mechanic should be able to advise you on the specifications of the car you own or are buying.