The Summit unit is a budget setup - the cheapest SFI LS balancer I could find when I bought it. The ATI has a service life as well. They recommend an annual rebuild (whatever that entails) for over 800HP. I don't know of anyone that is rebuilding one at my HP level annually. I'm hoping to get 5+ years out of it. Who'd a thunk that a damper has a service life???i wonder who makes the 'Summit' unit for them?
Scary....