i dunno why but i get some chatter on mine, was actually quite impressed! with MFI too - i don think its maent too chater either as every other erst mfi ive been in doesnt do it. maybe mines fucked

Dont DRILL the airbox, take the full front off the top bit (lid) and dont run a d/v

only way u can get rid of the airflow meter (metering unit i'd call it probably?) is to go EFI.