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Originally Posted by dwx
Obviously a reflash is a better solution as long as they aren't masking mechanical issues, like others have said...
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I'm going to quote myself:
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Something about this ECU solution doesn't give me a warm and fuzzy (at least without a better explanation from Toyota/Subaru). The error comes up because the ECU has detected a difference between where it thinks the cam gear's timing is and where it should be.
So does this mean that the something within the ECU is generating a fault where there is none, or are they widening the "window" for an acceptable deviation between the two readings (basically fudging it)?
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There's also the possibility that their modifying the operation of the oil control valves in a way to work around a mechanical defect of some kind with their cam gears (if cam doesn't advance, then hold advance side pressure 0.2 milliseconds longer, or something like that)
I have a pretty good feeling they tested the hell out of the prototypes and then started manufacturing motors and something went wrong. I personally am uncomfortable with ANY ECU changes at this point because their after the fact. I would rather have them tear out the cam gear and oil control valve which might be malfunctioning then have a ECU that tells me that everything is ok.
Really think about this!? How the replacement of the cam gear and oil control valve (both mechanical fixes) yield the same result as changing a piece of
software?
