Single-plane intake manifolds also usually have shorter runners, or pathways through which air and fuel travels to reach the cylinders, which further contributes to maximum airflow.

Sheetmetal Myths As exotic specimens most enthusiasts aren't too familiar with, sheetmetal intake manifolds are surrounded by misconceptions that need debunking.

Last month we showed what gains were available from three aftermarket Three-Valve intake manifolds in naturally aspirated trim. This month we're going to try the same three intakes, only now we'll ...

Your Cummins's exhaust manifold plays a significant role in ensuring your vehicle is running at its best. Here's what will happen if you drive without one.

When it comes to performance mods, most consider modifications to their intake and exhaust, but manifold and header upgrades have some important differences.

Intake manifolds can be extremely complicated when you dissect each part of the design. Small changes can make huge differences in the overall package.

Intake manifolds can be categorized into two basic groups: wet-and dry-flow manifolds. Wet-flow manifolds are used with carburetors [left]or throttle-body fuel injection where air and fuel are ...

This unusual 2JZ-GTE exhaust manifold is designed around a top-level racing trick for killing turbo lag: Fresh air anti-lag.

Intake tuning helps automakers harness the power of pressure waves, forcing more air into an engine.

Air flow is absolutely necessary for your engine, that is unless it’s leaking in through the intake manifold.

But if you can use an intake manifold that can be both, then you don't have to choose. That's where variable intake manifolds come in. It's the sort of compromise that isn't actually compromised.