I mean if you tune the ECU (reflash) then it will be recorded by the black box on these gen 3s and they can see it. It literally says tuning the vehicle will void the warranty and when I received mine I had to sign a document stating I knew that. Maybe it’s at the discretion of the dealer but it’s a possibility nonetheless. So not sure where I was speaking fallacy?
You can place a module the goes inline some cables in the engine so it tunes after the ECU but I’ve heard these can be dangerous to use.
Hey man, not trying to shoot you down or anything, but there is no language from ford that states tuning an ECU will void your warranty, powertrain or otherwise. It's not black and white like that. Threw a rod with a tuned ECU? Then yes you are likely going to get a denied warranty claim. Cam phaser issue? Hundreds and hundreds of online documented cases where tuned engines got cam phasers replaced under warranty. I'm not trying to call you out on a technicality, but there's a big difference between a manufacture binding you to some kind of non-tampering agreement, and warranty denial for claims that are very obviously related to a tune. Me personally, I wouldn't pretend for a second Ford wouldn't be able to detect a tune, even if uninstalled. I'm ready to "pay to play" but at the same time, I expect warranty support for defective parts unrelated to my tune.