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Originally Posted by Fordson
Has anyone who installed this unplugged the battery afterward to wipe the memory? I would not expect the butt-dyno to feel any different if the engine is still trying to run as though the factory cat was on it. Thanks for your impressions, though. 
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Uh, if you go back and read my original post you'll see I was going from an ORP to the HFC, not from a factory cat. After a couple of hundred miles of driving the butt dyno still doesn't feel any difference between the ORP and the HFC. BTW I didn't unplug the battery.
Ron