[E82HANK]

Hey all,

Got an 11 135i, 70k. No mods. Out of nowhere, when i start, the idle will go up and down all the way up to over 1k. After 20 seconds, it settles down, but i feel it still runs higher than normal in stop and go driving. Just feels off.

But no codes are being thrown. Is this vanos? Coils? Plugs? Hpfp? Vacuum leak? Wouldn't there be some accompanying codes? How would i narrow it down?

Thanks