I added mine when I added the running boards. I use it a lot. I think I found it on ebay for like $50 like you did.
That looks really good! I like the tips/location.
Yeah, I do the M5 shift. 5th is still 15% OD. My drive to work is 8 miles each way of 45 mph and redlights. I've gotten in the habit of putting it in M5 whenever I drive anywhere. When I do get out on the highway (rare) I do let the V4 mode do it's thing. I got 24 mpg on a +/-400 mile round trip to Tennesse and back, and about 22 mpg when I did a +/-1,200 mile round trip to PA and back (lots of hills). I don't hardly drive the truck friday-sunday, that's drive the toys days. I'll have had it 3 years in a few months and it only has +/-22K on it. While the highway mileage is awesome, my day to day average is about 15mpg. Still 2 better than my old Z71.