18G turbo? I'm assuming...I hope you didn't buy that turbo already. Because unless it's the same style as your VF48 *STI turbo* (VF40 for the wrx?, I forget). You just wasted a bunch of money. I'd say you can call/search cobb or perrin. To see if either one can get you a map for the upgrade. Because apprantly even perrin has Accessport maps. But, I'm afraid if you bought the wrong style turbo. I hope not.
