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i've had my power fc tuned for my r33 and its been working fine. until yesterday when i had another tune everything was fine. the tuner took it for a drive around the block and parked it. when i went to start it the car wouldnt start. found out the fc had reset for sum reason.. any one heard of this b4???????

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I have heard of this happening before but forgot what the outcome was...

The pfc uses a perment storage setup so if it looses power it wont forget the settings.... But yeah not sure myself and have not had a pfc reset on me before....

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Older PowerFCs do this. I believe the settings are stored and saved but a small battery is used to keep state much like a PC uses a battery on the motherboard to keep the BIOS settings.

I could be wrong, but this is what seems likely to me. Open up the powerFC the battery is probably replaceable.

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