Reply To: RAVE valve – Exhaust Sound?

[Nick Weil]

Voodoo would be a very good assessment…  The ‘Clicks’ theory only works if all motors involved in the comparison have the exact same:

1. Compression
2. Exhaust back pressure (i.e. matting AND pipe condition)
3. Spark plug
4. Jetting
5. PV spring tension
6. PV Bellows tension
7. PV friction coefficient inside the valve slot

I often enjoy listening to competitors ‘voodoo’ speech regarding power valves.  And watching the other persons reactions to it.