I'm thinking about buying a missing link, are they really worth the money? Are they something just to clean up the engine bay? I don't believe in buying stuff that doesn't make a difference in performance. What type of problems can I expect if I buy one.

 

they replace check valves, IMO id rather spend the 25 bucks to get the missing link than risk a check valve being put in backwards, or not working. i am selling a missing link..PM me.