Dyno testing crazy long trumpets - 200whp 4age

This experiment was done in an attempt to catch the first harmonic wave. Every time the inlet valve shuts it sends a pressure wave back up the inlet tube. When the wave exits the inlet tube a wave is sent back down the inlet tube. if the wave lines up with the next inlet valve opening event, it will have supercharging effect forcing more air into the cylinder.
This can also have a big negative effect, if lines up at the incorrect time pulling air away from cylinders

In the video you will see this was a complete failure, as no extra power was made anywhere across the rpm range.

A theory on what happened, is the loss/restriction created the long pipes outweighed any gains. even at the tuned rpm.
The silicone hoses sucking in was most likely caused by the negative pressure wave and the engine trying to draw the air in at the same time. probably showing a bigger power loss than expected in the dips.

Видео Dyno testing crazy long trumpets - 200whp 4age канала Garage 4age