Exhaust manifolds

The exhaust manifold is the first part of the exhaust system after the engine and has a major impact on flow, response and engine character. It collects the exhaust gases from the cylinder head and directs them into the rest of the exhaust system. This makes the manifold an important component, whether the car is used for street driving, tuning, motorsport or custom builds.

An upgraded exhaust manifold can provide better flow than a standard manifold, especially on engines where the original solution is restrictive. It can help the engine get rid of exhaust gases faster and provide better working conditions under high load, higher RPM or higher power targets.

On turbo engines, the exhaust manifold is also used to direct exhaust gases to the turbo. Here, correct construction, material choice and fitment are important, as the manifold is exposed to very high heat, pressure and vibrations. A good turbo manifold can be crucial for stable boost build-up, durability and response.

On naturally aspirated engines, the manifold is often about pipe routing, length and diameter, so the engine gets better flow and a more efficient exhaust. This can be relevant for engine upgrades, track use or if the original manifold is worn, cracked or too restrictive.