TUNED!
Got home around 7 last night and immediately went to work to get my truck tuned. They emailed me the file, you essentially just use the software to move the tune from your computer to the tuner, then disconnect it from the computer, plug to the car, press ok a few times and cycle the ignition a few times. myGenius tells you exactly what to do the whole process. Uploading took about 60 seconds to complete. The truck didnt crank over the first time, this is common any time the ECU resets, next try fired right up, all normal!
I did get a transmission temp high warning in the cluster while it was flashing...weird but not concerning.
I did a bit of driving last night, initially about 5 miles of hard throttles and trying to notice changes. Then over to a friends house for a bit and home, about 30mi round trip, mostly highway. Here are my observations so far:
-downshifts seem more prompt and snappy, seem to happen earlier and hesitate less....WOT from a cruise you feel it snap down gears and take off, feels good
-revs feel like they come up a bit faster, I can feel a bit more grunt, not face melting but its there
-pedal is a little more sensitive, not much though (somewhat disappointing)
-Seemed to feel it pulling a little better uphill with some throttle
-shifting seems smoother under normal driving
-I noticed while coming around corners I am now early getting back on the gas (anticipating the factory delay), one of the most obvious changes so far
I drove to work this morning totally normal, just like I do every day, some traffic and rain along the way. The truck just felt a little healthier, maybe feels a little lighter on takeoffs from lights and getting up to speed. I am happy so far. This weekend I'll be putting almost 800 hwy miles and repeating a trip I just did last week. I would LOVE to see mpg crack 16.5, which would be 1mpg better than last week.
My results may be different than yours. My truck is highly modified and carries tons of additional weight. I also have 4.56 gears which certainly change performance. I hope that someone with a stock geared, stock truck can also provide some feedback, that would be the cleanest data.
Any questions, just ask! I'll update with some more impressions over time and certainly after this upcoming trip.