Take a look at nearly any high horsepower racing engine and one
of the first things you’ll likely notice is the intake manifold.
High horsepower cars from classes like X275, Pro Modified, Pro
Stock and others, rely on manifolds that are not the typical
out-of-the-box, or direct from a mail order catalog pieces. They
are custom-built and custom-tuned components that take into
account the entire vehicle package.  We talked with two of the
big players in the custom intake manifold market, Wilson
Manfiolds, and Berry Motorsports, to get an idea of what goes
into the design of a custom intake manifold.  With sanctioning
bodies’ ever-tightening rules, racers and engine builders are
looking for every last horsepower advantage. In the past, the
intake manifold may have been only an afterthought, something
that was hand ported, or an out-of-the-box part.  Most of us
know the more air that can get into an engine, the more fuel it
can burn and theoretically the more horsepower it will make. The
intake should be designed