When I delete an aircraft I would imagine the gauges for said aircraft would remain in the main FS9 gauges folder. Can this folder become overloaded with needless information? Is there any way to clean out unused gauges?
I have thousands and thousands of guages and useless poop in all of my FS folders and I havn't noticed any changes at all. Other than sifting through it, I don't think theres another way. 😉
I've never had a problem with "left over" gauges and I have quite a few.
They make Gauge Cleaners but I've never used them, I don't want to take a chance just for some extra h/d space. (personal opinion)
I agree with RadarMan and 99jolegg. There are management programs for FS that will clean up all sorts of things, but I just don't like the thought of possibly getting rid of something that should be there. In a perfect world I'd have time to log each and every change to FS9 into a database, and then I'd be able to instantly see what it links to, etc. But no time for that so I just let the extra gauges and effects stay.
You may find that over time some of the cockpit gauges will actually start stepping on eachothers' toes. I bought the FeelThere CRJ earlier this year and found the autopilot completely unusable (i.e., the click-spots weren't there, buttons not working propersly) because I had an earlier freeware gauge that was overlapping. Sifting through the forums to find which specific gauge files I needed to dump certainly was a pain!