Best bully dog Chip setting for MPG?
I have had my late 99 psd 6-speed for about a month or so, and I am very happy with it (had to rebuilt the front end and do a couple other minor things) The current mods are
-5" exhaust with no muffler,
-I gutted the ebpv
-bully dog 6 pos. chip
I think my chip settings are 50, 75, 120 high idle and valet. I'm having some trouble figuring out what position to run the chip in for the best mileage. I have been mostly running around on the 50hp setting (I granny drive it around most of the time, so I dont really need the 120 anyway). I am wondering if a more aggressive setting (still driven like a granny) will get me a little better mileage. Ideally, I would like to get some custom tunes for the truck, but for now, I am working with what it came with.