Turbo and Induction: The Forced-Induction System Behind Modern Engine Efficiency

Forced induction — turbocharging or supercharging — is now standard on most new cars. A turbocharger uses exhaust energy to compress intake air, increasing the engine’s effective displacement without the friction and weight penalty of a larger engine. The result: small modern engines (1.0-1.5L) can produce the power of older 2.0L naturally-aspirated designs. The trade-off: more components, more heat, more potential failure points.

System overview

Exhaust gas spins the turbo turbine wheel. The turbine drives a compressor wheel on the other end of a common shaft. The compressor takes in atmospheric air and delivers pressurised "boost" to the engine. An intercooler between turbo and engine cools the compressed air (cooler air is denser, allowing more fuel to be burnt). A wastegate controls maximum boost by bypassing excess exhaust gas around the turbine.

What this category covers

Turbochargers, intercoolers, intercooler pipes and hoses, turbo fitting kits, turbo oil feed pipes.

Browse the full turbo and induction range on the Turbo & Induction collection.