Optimum exhaust flow is critical to maximizing the efficiency of any engine. After all, an engine is just a sophisticated air pump – and the easier it is to move air in and out, the more efficient the ...

Aftermarket intake manifolds like those made by Edelbrock Corp. (411 Coral Circle, El Segundo, CA 90245, 213/322-7310) are engineered to make the engine run more efficiently, due to more uniform ...

If you plan to upgrade your car on a budget, most car enthusiasts often start with the engine's air intake system and a performance exhaust. Add-ons like a cold air intake or a straight pipe will let ...

Iron castings, such as exhaust manifolds and risers, fail from corrosion as they cool and contract. Many a boat that runs well has been put in its slip on Saturday afternoon only to have water siphon ...