Mini R53 Big Plenum Ported Intake Manifold
 

R53 Super Cooper Intake Manifold. This manifold is design to prevent the unequal cylinder air/fuel distrubtion that causes engine failure by adding plenum volume to the manifold. The intake is ported, polished and the plenum volume increased by adding additional aluminum to the intake manifold itself. Designed to be used with the stock ECU, wiring, sensors and throttle body. It is a direct replacment for the stock intake manifold and can be used on stock (non tuned) cars.