Once you have flown with a JPI or similar instrument together with GAMI injectors you will begin to realise that the vast majority of pilots and engineers have no idea what they are talking about when it comes to engine management.
You will also begin to realise just how much money goes down the exhaust manifold that could have been saved.
They are simply brilliant and for any operator worried about the overhaul costs of a big Lycoming or Continental you should seriously consider installing them