Rob Kenney Posted June 20, 2012 Report Share Posted June 20, 2012 I have just come into a 1994 WRX sti,  I opened the ecu  case and found the link computer it reads on the back LINK 1996 SUBARU V3.3. On the front a sticker on chip reads WRXROAD 421  and another stocker reads 585 Could anyone please help me Identify this computer and what functions it has, also is it PClink tunable ? Is it possible to upgrade the firmware ?  Kind Regards Rob Quote Link to comment Share on other sites More sharing options...
Simon Posted June 22, 2012 Report Share Posted June 22, 2012 Hi Rob You have a G1 Possum Link (pre PC tuning) Can be upgraded. But suggest a change to a G4 ECU would get better results Instructions for your unit can be found http://www.linkecu.com/support/documentation/g1-engine-management-documentation/MY96Manual Quote Link to comment Share on other sites More sharing options...
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