Dual-plane intake manifolds provide solid power and torque at low speeds, but fall off performance-wise at around 5,500 RPM. For racing applications, high RPM performance is essential, ...

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 ...

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 ...

While many carbureted manifolds feature longer runners on the corners, resulting in uneven air distribution from cylinder to cylinder, the runners on a sheetmetal intake can each be made the same ...

In our last issue, we assembled a number of different 5.4 intake manifolds and compared them to the factory Navigator intake assembly on a modified 5.4L Four-Valve motor ("Factory Fast Vs.

An exhaust manifold is a set of iron pipes that lead from your car's cylinder bank to the initial pipe that leads to the catalytic converter. This part connects your engine to the rest of the ...

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.

It wasn't until the Eighties, however, that automakers began using variable-length intake manifolds. A great early example is the Porsche 928 S4 . Below 3500 rpm, the 5.0-liter V-8 was fed through ...

Your intake manifold. It takes in air and sends it to your engine's combustion chamber. This is basically the start of the combustion process. After all, you can't have combustion without air.

This unusual 2JZ-GTE exhaust manifold is designed around a top-level racing trick ... My BMW 128i Really Woke Up With an Aftermarket Intake and Exhaust My BMW 128i Really Woke Up With an ...

Intake manifolds are built with a couple of main components, which include the plenum and the runners. The plenum is a reservoir that holds air until it’s needed in the cylinders.