09-13-2012, 11:57 PM
The clean air mod when done correctly creates a vacuum not pressure.
The air valve is ported directly to the exhaust port, one way reed valves in the valve cover allow a scavenging effect, but wont allow pressure.
The air valve is ported directly to the exhaust port, one way reed valves in the valve cover allow a scavenging effect, but wont allow pressure.