Hi everyone. I am new here. I recently bought my first subaru. a 2006 wrx sti which is now on 110,000 mls.it was forged at 103,000mls. You can hear the piston slap when ever you accelerate, even when it's fully warmed up. Is this something I should be concerned about? I have been told that piston slap is normal on a forged engine. But I would appreciate any advise. Thanks