Advice needed on what to do for power gains w/ warranty?

[brucelinc]

In the vast majority of warranty claims, the dealer has no reason whatsoever to waste time investigating whether or not the car was ever tuned. Obviously, it you come in to the dealership with a rod hanging out of the block or some other catastrophic and unusual failure, Ford might ask the dealer to do some investigation. If you have a good reputable tuner, catastrophic failure is highly unlikely.

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[JP_Stang]

Don’t quote me but a good friend at a ford dealer told me that if I do a tune, end up having a problem. Remove tune and try n put 200miles n 20 key turns and they won’t ever see a tune was ever in the car.

Sorry that I am quoting you, but is this true??