I have been reading on the forums here about the problems folks are having with the later Cummins engine . I have an 2001 American Tradition which has the Banks Power System 'I am not sure as I bought the coach used I'm the third owner .What are the pros and cons of the Banks System on a Cummins engine.What I do know : This thing will fly . but the fuel mileage is terrible ,about 6 mpg . This is the same as I get on a Prevost bus with the 8v92 Driptroit . Can this this system be removed ? If so ,will it improve mileage dramatically and what could be the penalty leaving it as is.