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Old 07-03-2006, 12:22 PM   #21
Tea cups
Scooby Specialist
 
Member#: 103136
Join Date: Dec 2005
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Quote:
Originally Posted by Jon [in CT]
Over the course of time, SOA has created 5 different ROM updates for the 2002 WRX. Also, Subaru began using the KWP2000 OBD-II protocol in 2003. It's possible that, when creating one of the later ROM updates for the 2002 WRX, Subaru incorporated the new KWP2000 OBD-II protocol into the fix. Your EcuTeK tuner may have based his tune on the most recently available Subaru ROM update.

Some scan tools which work fine with the older ISO 9141 protocol don't work at all with the KWP2000 protocol.

It might be useful if jigga would hook up his fancy new scan tool and tell us what it reports for Calibration ID, which is usually part of the Vehicle Information data.
I've reflashed my 02 with A4SGE01C, the latest known revision for the 02s, and my 5+ year old Auterra PDA OBDII logger has no trouble connecting and reading codes.
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