This is an OEM set of R53 Cooper S intake manifolds. Incuding the main inlet manifold, supercharger outlet horn and intercooler outlet. These aluminum manifold peices have been completely polished and smoothed to increase intake airflow. This will make LESS turbulence in the air stream allowing for more cylinder filling. Early reports showed 12% flow gain, but further testing is still needed. Great mod that won't hurt performance. Remember the engine is just an air pump& More in+More out = More power.

 

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