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i personally think reducing the turning radius of the air ('improving the y shape') is the primary benefit so that the air can adhere as it turns the bend, which will reduce resistance and increase flow volume.
at steady-state flow an area of turbulent air is established where the wedge sits, and turbulent air has less flow resistance than the wedge does, so the wedge is not much of a benefit.
HOWEVER, the flow through the intake tract isn't steady state. it pulses with opening and closing of valves, so the turbulent air wedge is constantly re-establishing itself. in this instance having an actual divider may be of some benefit. unfortunately, the previous offerings available to us were a bit expensive ($260 for pedro to add a wedge to a 997 plenum, or $900 for an ipd unit). further, if the wedge isn't done right, as kram says, it probably does more harm than good as it becomes a restriction to flow. ps, not arguing against Pedro's claimed gains from the technotorque, nor that his pricing is unrealistic, but am wondering how much of the gains he shows are from the 997 plenum vs the added wedge - that would answer the question.
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