Not sure exactly what the difference was but they changed my muffler,the extension of the exhaust after the muffler and a new chrome tip. It was done by a performance muffler shop called Mufflex here in NJ. I wish I drove another VX recently to really understand the difference but for me it feels completely different. Definitely more horsepower and general flow. I am really happy with the increased performance and sound. I actually called the shop afterwards to thank them for the work and explained the difference and he said it should different but not be that much different. But he did say there may have been something clogged becuase our mufflers were actually encased and maybe there was something wrong in the interior .... but there would definetly be an increase in horsepower. He was happy that I noticed such a difference.
Not sure if it was possible.....but I love my Killer Bee even more
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