“I find it real interesting that the Devil Horns have added 16 cfm to the air
flow. After that awful long lecture about how they would add nothing.
Seriously, 16 cfm isn't big, but every little bit helps.”
The air increase is due to the rolling edge of the devil horns as air enters the tube, we were also able to improve upon the devil horns on the flow bench by playing with some clay around the horns back half but that is something we will have to look into to see how feasible it would be to do on future devil horns. Ideally this is by far the best flowing inlet but there isn’t room for it.
Vibrant Performance ::. they have one of those there at the shop for demonstration and it will outflow the bench!
“I would like to see a photo of the test set up.
I have particular interest in the set up for the horns.
As the set up may indicate if the test actually proved their worth or not.
Enquiring minds want to know.
I assume the air was sucked through the systems.”
Check the attached image in the first post. Yes air was sucked thru the system the same way as it would on the car. The only difference is that we plug the valve cover breather port on every system we tested.
“Gotta ask, how are the horns helping without vehicle motion and increased airflow? I can see that they would support increased scooping of air from the cold zone while driving but can't get my head around how they are improving your bench tests?”
Angle of approach for the incoming air, it has nothing to do with vehicle speed; it is how efficiently we can get the air into the tube. Notice in the first flow bench thread how the CAI’s flow better with an air filter on then versus removing the air filter completely and sucking thru a straight cut 3’ piece of aluminum. This is due to the insides of the air filter and how they have a nice round smooth transition.