:welcome: the only things you can really do to your truck without voiding the warranty is air intakes and exhaust. anything else you do for power will void your warranty. and im not a firm believer in any programmer being 100% undetectable. there is a print left somewhere and if your dealer looks hard enough they can find it.
i feel the same way about the programmers and my dealership has its own truck "sub dealership" so I am imagining they will know how to find it. But as long as nothing major happens(expensive) they might not look too hard.
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