Tuner like “5 Star Tune “

mkirsch wrote:
Tuners won't do anything for engine output on a normally aspirated gas engine. That's already been maximized by the manufacturer.

All tuners do is give your subconscious a lead foot so you stomp on the pedal harder, say, "YEAH! I HAAAAAAVE THE POWERRRRRR!" to yourself, then find out three days later that nothing really changed and there's a hole in your wallet where several hundred dollars used to be.

Partly true. Yes, mfgs have optimized stock emissions complaint performance pretty much and I personally wouldn't spend $5 on tuning a NA gasser. All the recent trans offerings have more than adequate programming as well.
Yes you can pull another claimed 30-40hp out of a NA gasser. But that will just become your new "normal" pretty quick and to get the "big power", lol, you're running premium gas against a little more timing from the programmer.
Keep the 6.0 stock, IMO. Not much low hanging fruit, just like any NA gasser unless you want to spend alot more money.

Trans tuning "used" to be a bigger deal. Not any more. (Save for Ram 68rfe and the old 66rfe behind the hemi a couple years ago.)

I bought a tuner for a 01 Ram 1500 that we had back in the day. Typical "30-40hp" gain. Notice how they're all the same for pretty much all applications?...
I attempted a few empirical tests and I saw a little quicker acceleration. It did help the trans and throttle response a bit. But it was basically imperceptible after driving it for a while. Actually sold it and didn't notice the difference.