It works, Its still louder than stock. If your a highway driver it works best since it tones it down. But I've been driving without the silencer mostly and even with my daily commute on the freeway I hardly notice it being too loud. My girl friends don't notice it anymore themselves now.Denhamcla said:Im thinking of buying the HKS axel back, due to the low cost, and my inability to by a rb or ms axel back used, so i need to know from those who have it, does the silencer work? Is it still loud, or is it inaudible. Thanks Guys!