well, its been over a year now with my sallys and I have to say, it seemed to really fix MY problem. My issue was not the lack of carb syncronization at all (as they were sync'd just prior to my salamander install). To re-cap; vibes were still happening after a full service from the dealer, bar snake (holeshot) was'nt quite enough I guess. Best $70 bucks I spent in a while!.