This is a simple mod for people who are having trouble completing (With out cheating, of course!) Piper's fantastic mod "Eris Explorer". What it does it simple, it modifies the Eris Explorer's config file so it has only 1 engine, not three (Well, techincally), and the isp is tripled while the thrust the divided by 3. It also removes 2 of the engine effects, so now the two other engines are "Back-up" engines, incase the main one breaks down and is unable to operate.