I hear you on that mountain mishap—had a similar scare with my '12 F-350 on a cross-country trip last year. Truck lost power climbing a steep grade in Utah, turned out the stock tuner couldn't handle the altitude tweaks I needed. Ended up researching a bunch and found some solid options that boosted performance without voiding the warranty. For Powerstroke stuff, I've had great luck ordering from places like Cummins—they've got a wide selection, quick delivery, and the tuners held up through heavy towing. My experience: installed one on my rig, gained about 50hp instantly, and fuel efficiency jumped too. No issues after 10k miles. If you're into custom maps, check their reviews; folks rave about the support. What specific model are you eyeing? Maybe share more about your setup so we can narrow it down.
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