Originally Posted by ultimatejay

Perfect! Now get a good housing and to the same thing.

Originally Posted by dguy

We've done a fair bit of flow testing in the shop and we've found that a 1mm bevel nets about a 3% increase over a sharp edge, a 2mm bevel nets another 2%, and anything greater than 2mm begins to rapidly reduce flow.

Originally Posted by dguy

How so, what you're basically looking for is finding a vortex generator that creates laminar flow around the edges of the port. 2mm seems to be the magic number that creates a nice boundary layer without encroaching on the unobstructed flow areas in the center of the port.