Quote Originally Posted by Jeffrey Lebowski View Post
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.
Do you have 4.10 gears? That could explain the difference in mileage with your 2003 (assuming 3.73 rear end).

On topic - I had an 04 w/ the HO Cummins (305hp/555tq). I ran it very successfully with a Predator Power Puck. It's a simple install with a two-mode switch you can run into the cabin. One is the tow-haul mode and added (on mine which was the 5.9L) 60hp/100tq. The other position was the performance tune. I don't remember the specs off the top of my head but I never used that setting because the fuel economy was better w/ the tow-haul setting. Won't overwork your injector pump either. I also had an AFE full cold air intake and flow through muffler (but this was before emissions equipment was added to the 2004.5 model year). That was enough to satisfy me, and with routine maintenance, kept my Cummins humming along well into 150k when I sold it.