So I noticed something really weird... When I start the car, it'll rev a bit high as it gets in shape, then it'll go to idle. If I then rev the engine and let it keep sitting, it'll go down to a really low idle followed by CLUNK CLUNK CLUNK CLUNK CLUNK CLUNK CLUNK.
It sounds like it's coming from below the car;
Oil level is fine.. I'm thinking maybe the DISA is acting up?
I don't notice anything while driving, only in this circumstance. This is with an MT in neutral.