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Old 06-03-2015, 05:00 PM   #128
Scooby Newbie
Member#: 361580
Join Date: Jul 2013
Chapter/Region: E. Canada
Location: St. John's, NL, Canada
2014 STi 5dr


I successfully flashed a 2013 ECU using four pins; 1 to ground, and two labelled "Control Module Power SUpply" and one labelled "Backup Power Supply". In the 2009 WRX manual located here, on pages EN(H4SO)-18 & 19 those pins are A7, B2 and B5. You can use D1 as a ground.
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