confusion reigns supreme ..have  always had a miss/splutter/chuff from rear cyl exhaust  at idle and low revs ( no load ) and have tried everything to no avail ..on my  98 FLHT evo  screaming eagle ignition . cv carb .true duals .

Decided to check voes operation and noticed when disconnected        a. the idle revs drop       b. the miss/splutter/chuff dissapears

I may very well be wrong but I assume there is a choice of two advance curves governed by engine revs and the voes switches from one to the other depending on manifold vacumme . so running without a voes switch would be similar to the old mechanical advance unit in that  , advance is controlled by revs only .

My problem is there are two different views on which way the switch works ..  does it use the advanced curve when disconnected or the retarded curve ?

reason being if its using the retatded curve then its safe to ride without voes .. if its the advaced curve me high comp pistons are gonna fry .

your right in what your saying but bugger if I can remember either adv or retard have a look at at the bootom of the main page in docs and info
theres a evo softail manual down load there that should tell you

the purple /white wire is the Voes , diconnected is retard mode , ground to earth is normal ADV mode , u can check with a meter by sucking on the hose  you should  be able to hear it click in & out  @ 2 lb pressure , best check timing 1st