With Cat's Whiskers, my FX was quiet. But I added Sim's products; the Sim's Limbsavers and all three modules of their Modular Stabilizer. These items not only improved what noise there was, cut bow shock and it also tightened up my groups significantly.

Today I ordered the Quicktune 4000 Drop Away Rest that I think will improve it even more . . . [after hunting season though].

Bowhunter