[mark houghton]

Originally Posted by laughac

Does the frequency valve require a computer?
A computer was not included with the engine I bought.

Can I still just set the idle mixture where and go?

I've always assumed that the answer to that was yes, but reading some of the comments from Jim make me wonder. I can't see how a valve can oscilate at any frequency without some sort of controller involved. But hey, maybe all a person has to do is apply 12 volts to it and it will happily buzz in its default or open loop mode. If that's the case, then yes you can simply tune the mixture and idle speed around it and not worry about obtaining a computer.