Cold intake air can really add horsepower!
Bring some into your throttles! Made for TWM by a well-known race
car constructor, this air box will serve several purposes:
Provides a plenum for cold air drawn through a remote filter
system. Very important for efficient functioning of electronic
fuel injection systems.
Helps to reduce intake roar.
Helps equalize distribution to individual intake runners.
Fits under the fuel rails, eliminating the need for throttle
body extensions.
On the 4-cylinder air box, two backplates are available,
one for TWM throttle bodies which fits under the fuel rail and obviates
the need for extensions (shown below left), and one for carburetors
(shown below right). This unit is made of fiberglass and has a 3 "
inlet tube.
IMPORTANT NOTICE: It has been brought to our attention that our 4- and 6-cylinder air boxes, were not designed for, nor will they pass, the SCCA single-inlet restrictor test. In the immediate future we would advise against trying to use the box in an SIR application. We are working on solutions. The air boxes function normally in all other applications.