Posted by Stuffy Smith on May 08, 2002 at 17:51:47:
In Reply to: Re: Yamaha Euph. 5th valve rotor compensator posted by ETS on May 08, 2002 at 17:07:23:
If you mean that will be lowered a fourth, yes it is the same. The response will change. The fourth valve alone will be stuffier in than it would be without the valve attachment.