I never understand why people insist on modifying their factory tunes. OEM's spend millions upon millions of dollars testing their calibration programs to ensure they are safe and will work in all environmental conditions.
seriously, what are you going to do with 30 more hp that's only available at Wide Open Throttle? Even tho it's claimed they get that much, at what fuel economy cost?
I have one (Predator Tuner) on my Dodge Charger, because that car is modified. There's one on my wife's Dodge Challenger, 1st because she won it as a raffle prize at a car show, and 2nd, because I HATE 1-4 skip shift.
On my F150, used for towing, not a chance in H E double tooth picks.