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Originally Posted by Lil bastard
How are you determining that you have established laminar flow? At what velocities?
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... is not the correct term, but rather "less turbulent flow".
I'll be posting a video later this week where you'll be able to see the increased efficiency of the TechnoTorque.
Also, the piece is designed for the lower RPMs, where additional torque is needed.
At high RPMs, let's say at 6000 RPM, a 2.5L engine will be sucking in 7,500 liters of air per minute so at this speed, efficiency is out the window. It really doesn't matter that much if the inside of the Tee is smooth or not.
But at idle (800 RPM) it's only sucking in 1,000 liters of air, or 7.5 times less air. Here the smoother the walls are the more efficient the flow will be from the low RPMs.
That's why we see an increase in Torque at lower RPMs and no change basically in the HP curve.
Happy Boxstering,
Pedro