Hey all, car is 09 WRX stage 2, 61,000 kilometres, had an oil change less than a week ago. Driving around tonight and noticed a small tapping sound. Pulled over and the sound appears when the rpms pass through 2.5 - 3.5k. Sounds like rod knock as far as I can tell from youtube videos.

Anything else that could cause this issue?, oh also recently had some exhaust work done, had my muffler removed and a new resonator put in, doubt its related but thought i would throw it out there.

Oh and the car drives just fine, no codes, problems with boost or anything. Just a strange ticking noise, hopefully with the car put back to stock warranty should still take car of it.