Chiptorque will have maps for the 08 Wrx in a week or 2 max. They will have maps for the 08 STi whenever i can get my car on their dyno
cost is around 1500, but you get at least 3 maps(hi boost/low boost/valet/95 octane/98 octane etc...), and the flashing module. so you can flash it back to stock whever you want, and get maps altered etc just like an ecutek.