VAMike
Well-Known Member
The way this works is that some engines can get pushed harder than others because there are variations across the production run. The manufacturer does some modeling and some testing and sets the parameters to a point where they minimize warranty issues across the entire supply, not to the point where each individual unit hits its max potential. Can some of them be run much higher? Sure. Will some of them break with the same parameters? Yup. If you want to roll the dice, go for it. Just do it with the knowledge that you're on your own if you do so. And don't be so sleazy as to (try to) lie about what you did and get the manufacturer to pay for your mistakes if your particular unit turns out to be from the bad end of the bell curve--Ford sold you an engine that guarantee with their settings (and they'll pay if it turns out your unit was at the very bad end of the bell curve, because that also happens) but they didn't guarantee it to work with any settings (even if it might). On average there are probably more units that left performance on the table, because making the numbers a little lower costs a lot less than warranty service, but that's an average and average means some winners and some losers.I've modded, tuned and driven just about every vehicle I have owned hard and I've never had an issue.
"It worked for me" isn't really a very useful data point since there are counter examples of "it blew up for me". Unless you're Ford you probably don't have very good data on outcomes across all units and specific numbers of how many successes vs failures there are.
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