very curious to see more about this. Not so much the ewg/iwg but the manual boost controller paired with a gm solenoid. I think having that slightly slow boost response is what I like least about my car. I know a manual boost controller would get me that quick spool but I like some of the safety features of the electronic boost control. Do you know of anyone that has set this up on an 04wrx? I know those didn't do so well with mbc's like the 02/03 wrx's did.