Originally Posted by pca911turbo

"T" shape or 90 degree angle is the worst thing you can do for any intake or exhaust. It severely restricts flow and mixtures. A graduated curve intake plenum has a more subtle change to it and, thus, less restrictive producing better flow and more TQ/HP. I talked about "straight" not "T" shape. A "T" shape is the most restrictive shape for any fluid dynamic flow. I have taken fluid dynamics in college and it is my understanding that curved will produce more TQ. Maybe that is why Porsche went with that design this time around!