CTD just turned over 100K yesterday, and with that the end of the engine (and all) warranty.
Should I get a tuner / program / computer? I'm not looking for speed, it would be probably mileage setting. If so, which one and how soon to pay for itself?
This is a 2007 with a 6 speed manual. I'm right now getting about 17 mpg (as opposed to the 22 my 2003 auto got). Only drive it in bad weather, camping, bicycle races, etc.


Do I want one with a digital read-out or go ahead and get a guage pod? I hate seeing that on the A-pillar, so I'd be looking for one to go between overhead console and RV mirror.