I hate to say it

Q: is there a mileage or reliability downside to this tune?

 

Mileage can be had for sure.

Longevity, as long as you’re taking care of your maintenance, I don’t see an issue. Remember, there are supercharged 3.5’s making more power and heat.

 

Unless I am mistaken, it appears there are multiple vendors offering tunes.

Which is the "main stream" vendor, most likely to continue support?
Being CA smog legal is mandatory as are my specific needs.
I'm a street driver only, and looking for low end grunt and driveability.

Also, I'm in the computer business.
Is there any DIY flash and restore hardware available to retail buyers?

I would like to flash back to the stock program as needed, to avoid any warranty hassles from the dealer.

 

Yeah I’ve always had 5spd so R was all the way to the right and down.

I did put my truck in R twice when I wasn’t paying attention at a red light. You should have seen the look on both of those drivers faces haha.