Hello! Long time since I posted here. I had a 2010 WRX and this had the same issue so I don't know if its the gas here in town or what.
When driven relatively moderate under WOT, 1st and 2nd gear mostly, I hear a rattling ticking sound only when the turbo spools up.
My 2010 was bad, and caused severe lag issues. Now that I traded in the 2010 for a 2011, its starting to do the same thing. I don't beat on my cars, but wondering if its a fuel issue.
Is there any bulletin on this? Only happens under load, and past 3k rpm