I just bought my 2002 WRX a few months ago and now I've been having random boost spikes. It doesnt happen in first or second gear but when I try to give er some juice in any higher gear my boost will suddenly spike up and come back down before going back to normal. Even if I have cruise control set this still happens if I'm going up a steep enough hill. I'm not a mechanic but my internet diagnoses is that this must have something to do with my boost controller or solenoid? Any help and advice please!