As noted earlier the Unwired Tools servo replacement that Performance currently has on sale is a closeout of an earlier than current version. Should work well enough but installation is a bit more involved and iirc it lacks some of the programability of the current version. If anyone's feeling tempted by this deal it might be wise to go to the Unwired website and download the manuals for the current (I4) & immediately previous (Hx) versions. There may be some documentation there that details the differences as well. I just don't remember. Also, expect the installation to take considerably more than 2 hrs the first time around, especially if you suspect the existence of vacuum leaks.
joe
