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Originally Posted by 04fxsts
The tuner is no longer on my Harley because it wouldn't start one day, first time it ever failed. Got it checked out and the tuner had went bad, just had to remove it and all went back to the stock tune. It will stay like that as long as I can still ride. Jim.
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That can't happen with the 5-star tune. It downloads a new calibration into the engine computer. Thus if the engine won't start the engine computer would have to go bad (e.g. the 5-star tuner is really a programmer, not a piece of hardware you have to hook up and leave on).
You can restore the engine to stock (the first thing the programmer does is download the stock tune so that the vehicle can be returned to stock). I've done that a few times with my old F-350: Return it to stock before taking it into the dealer (even though I had waited until the warranty expired before tuning it). Although there were reports on ford-trucks.com that the engine computer also keeps a count of how many times its been reprogrammed and that the dealers check that count against their records...
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