u/Drmajsta

What is this noise

What is this cricket like noise beyond my engine sound. I started hearing it after stage 1 remap.
Bmw f10 2011 N47 2.0 diesel. Also my car became jumpy while idling in neutral but only after powering on/off the AC.

Car is regularly maintained. New timing chain and never heard this sound before the stage 1.

u/Drmajsta — 9 hours ago