I've been thinking alot about getting a data system. I probably dont need one but right now i'm working on dialin the boat in and a few people have said things like "if we had a data system we could see.." I've also been wanting to see what my oil pressure is doing during a pass, after a pass, cruising, etc... A data system in this boat is always somthing that can be moved to my next boat so i think it may be worth the money. especially if i can catch somthing starting to go wrong before it goes really wrong. What do these units normally cost. At this point i'd like to just watch engine vitals (oil pres, oil temp, water temp, water pres, rpm) and pump pressures. I thought i remember reading some where that the sensors where what were really expensive. Anyway just want some thoughs and would like to hear what i will expect to pay. Anything else i should monitor?