I am having a strange problem. I have an 02 wrx wagon, bone stock. in any gear if I go WOT the boost will build normally till .08 bar than it shoots up and sometimes past .1 than the boost will drop back to roughly .08 and flux back and forth while holding the throttle down. its also a slightly noticeable drop and boost of power while this is happening. Most of the time If I just get on the throttle hard but not wide open it builds like normal but it will pretty much stop at .05 unless I go wot than it does as I described. I took it an ex subaru dealer in town and they said they could not reproduce it and they did not see any problems. when I told them I would make it happen in a ride along they never gave me a call back . does anyone have an idea of what it could be?