Also you have to realize that that manifold was designed, as most OEM manifolds are, for a Normally Aspirated engine. Normally Aspirated means that air is drawn into the cylinders not forced in. Take a look at a Lancer EVO's manifold. Fairly large plenum and short runners. Ideal setup for forced induction. The AirRam would be ideal if the plenum was a little larger and the runners were half the size.