Along with a better-flowing intake and exhaust system, headers are among the first bolt-ons that any naturally-aspirated believer has got to consider. Together they help eliminate restrictions within ...

Bolted directly to the engine block, the exhaust manifold is the first section of a vehicle’s exhaust system. It funnels exhaust gases from all the cylinders and routes them to the car’s catalytic ...

In a naturally aspirated engine, as air comes in through the intake and passes through the throttle body, you've traditionally had two setups for what happens next. Using longer, narrower intake ...

When Volkswagen's third-generation EA888 1.8-liter turbo four-cylinder engine came out, we noted a particularly unique feature that's somewhat uncommon in passenger car engines: The exhaust manifold ...