POPPING LIKE OUT OF TIME on 1993 BMW 325i

POPPING AT IDOL FLATTENS OUT AT HIGH RPMS

Asked by for the 1993 BMW 325i
Sounds like an ignition problem. Get it checked by a Beemer specialist.
If you want to find a specialist, here's a directory link for you:
https://repairpal.com/directory?address=91762&car_brand_names=BMW