No, not every TDI (Turbocharged Direct Injection) engine has a turbocharger on board. TDI refers to a type of fuel injection system that uses direct injection technology, and the "turbocharged" part indicates that the engine is also equipped with a turbocharger. However, there are TDI engines that do not have a turbocharger and rely solely on direct injection for fuel delivery. Therefore, it is not accurate to assume that every TDI engine has a turbocharger. **

Yes, 172 is generally considered a good score. It falls within the top 1% of scores on standardized tests such as the LSAT or GRE, indicating a high level of proficiency in the subject matter. Achieving a score of 172 demonstrates strong analytical and critical thinking skills, which can be beneficial for academic and professional pursuits. Overall, a score of 172 is highly impressive and can open up many opportunities for the test-taker. **

The turbocharger is typically located between the engine and the exhaust system. It is connected to the exhaust manifold and uses exhaust gases to spin a turbine, which in turn compresses air and forces it into the engine's intake manifold. This compressed air allows for more fuel to be burned, resulting in increased power and efficiency. **

Many BMW models are equipped with turbochargers, but one notable example is the BMW 3 Series. The 3 Series has been offered with turbocharged engines in various configurations, providing improved performance and fuel efficiency. The turbocharged engines in the 3 Series have helped to enhance the driving experience and maintain BMW's reputation for producing powerful and dynamic vehicles. **

The turbocharger is lubricated by the engine's oil system. The oil is supplied to the turbocharger through a dedicated oil feed line, which delivers pressurized oil to the bearings and other moving parts within the turbocharger. This lubrication helps reduce friction and heat, allowing the turbocharger to operate efficiently and reliably. It is important to use high-quality oil and to maintain proper oil levels and change intervals to ensure the turbocharger remains properly lubricated. **

A turbocharger whistles due to the sound of the compressed air being forced through the turbine blades. As the exhaust gases from the engine spin the turbine, it creates a high-pitched whistling sound as the air is compressed and forced into the engine's intake system. This whistling sound is a result of the high-speed rotation of the turbine and the pressure of the compressed air, and it is a characteristic sound of turbocharged engines. **

An illegal turbocharger is a turbocharger that has been modified or installed in a way that violates local laws or regulations. This could include using a turbocharger that exceeds the legal size or boost limits, or installing a turbocharger in a way that bypasses emissions controls. Illegal turbochargers can result in fines, vehicle impoundment, and other legal consequences. It's important to ensure that any modifications to a vehicle, including turbocharger installations, comply with local laws and regulations. **

The turbocharger glows because of the high temperatures generated by the exhaust gases passing through it. As the exhaust gases flow through the turbocharger, they spin the turbine at extremely high speeds, causing friction and heat. This heat can cause the turbocharger housing and components to glow red hot, especially under heavy load or high boost conditions. While some amount of glowing is normal, excessive heat and glowing can be a sign of a problem with the turbocharger or the engine's tuning. **