Wr1 Ecu removed from a 2004 WR1 still has Prodrive label on and gaurantee seals intact. Excellent way of adding 50bhp to your Sti with supporting mods i.e 3 port boost solenoid and exhaust. The Wr1 is still the most powerfull impreza produced in the Uk bar the cs400 and is 50bhp more than the equivelant Sti of the same version this is a cheap way of adding lots of power. Btw your keys will need recoding available from Subaru Dealerships from as little as £25
£200 o.n.o delivered pm if interested.