Originally Posted by K2m
When a LC8 is perfectly tuned they do this.
It may be possible to tune it out by changing the Air Leak jet on the ACV (air cut valve) it's on the pilot circuit.
If you wish to explore this option I can help further.
If I understand correctly :-
It came back from the shop popping on decel. ..... Spot on.
+1 every well jetted lc8 I've been on does it, _and_ it's fun.