The Performer T.B.I. (Throttle Body Injection) Intake Manifolds are dual-plane low-rise intake manifolds with a 180 degree firing order and patented runner design. This patented design greatly improves torque over a wide RPM range for excellent throttle response especially off-idle through the mid-range. The intake manifold directs the air or air-fuel mixture from the throttle body to the intake ports in the cylinder head. The flow typically proceeds from the throttle body into a chamber called the plenum which in turn feeds individual tubes called runners leading to each intake port. The Performers are ideal for passenger cars trucks and RVs.
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