Squeaking in engine bay

So about a year ago I first noticed a squeaking in the engine bay and it was not to long after installing my downpipe and lightweight crank pulley there is a squeaking in the engine bay. It seems to be coming from the left side of the engine bay and the v band clamp to the downpipe was just tightened and it isn't that. There is a little bit of oil below where the crank pulley is and the belt on the side. Idk what is causing it!!!! Please help!


Sent from my iPhone using Tapatalk

Crank pulley? Is it aligned perfectly?