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Old 01-28-2005, 04:26 PM   #6
Scooby Newbie
Member#: 46311
Join Date: Oct 2003
Chapter/Region: MAIC
Location: Phoenixville, PA
2004 Impreza WRX


Note this in reference to the WRX AP not necessarily the STi:

Anytime you reflash your ECU (or disconnect your battery for that matter), the car has to go through 50 or 60 cycles of turning off and on before the ODBII sensors are in a ready state.

The newest versions of the AccessPort BASE maps have a modification to the stock ECU code that will immediately put the sensors in the a ready state.

Most likely you're running an old base map with your accessport, or using a stock base map; neither of which have the new code in them.
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