Hey guys my name is Sam Ive got a 04 BA XR6 turbo manual and when I put the foot to the floor it sometimes shudders and feels like loss of power around the 3-5k rpm But it doesnt always do it which is really annoying when I try n take someone for a drive to show them. Ive taken it to the mechanic and he replaced the fuel filter incase that was it but ive only ever ran 98oct in it was wondering what people think? I was reading a problem someone else had similar and they thought it was the boost solenoid what do you guys think?