Cummins engines used in Ram Heavy-duty trucks are famous for making insane performance gains with simple upgrades. Road-going truck owners just need to toe the line and keep their modified diesels ...

Bolting on an aftermarket intake manifold has long been the introduction to hands-on hot rodding. Improved looks, performance, and, often, fuel economy can be just an intake swap away. Not to mention ...

The Honda Civic brags a rich automotive heritage dating back to the first generation '72 model, with its 1.2L engine delivering 60 hp. Eight generations have passed since the Civic's debut, and the ...

If you want to understand how engines work, it's important to realize the part the intake manifold plays in the grand power scheme. The basic job of the intake manifold is to route fuel and air in ...

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 see ...