ive tried everything to kill this popping in my speakers coming from my ignition system including all new ignition components (plugs, wires, cap, and rotor, coil....no cheap stuff....), butt loads of grounds placed here and there, radio noise filter, ignition box noise filter capacitor from msd, wired my radio directly to the battery, tried different radios, took belt off and disconnected everything but the radio and ignition system. the only thing i havent tried is wrapping my entire engine with aluminum foil and getting me some damn bluetooth speakers to ride around with. if anyone knows a wizard or automotive master of the arcane arts that does service calls please let me know, otherwise any input would be greatly appreciated.