Hello, I recently purchased a 06 STI and after 3 months i started to notice a faint rattle comimg from my exhaust. Today the rattle has gotten to the point to were i hear it all the time; downshifting, coldstart, idle, etc. After lifting the car, The rattle sounds like its coming from inside my mid-pipe Aftermarket parts include: catback exhaust, coldair intake, BOV.