does yoshamari make a quiet core

[K-Dub]

does yoshamari make a quiet core for thier ti pipe. My buddy has one and that thing makes your head ring if your behind him, plus some people are starting to complain. I checked the packing and its ok.

[BANDIT TRX450]

Yes the do they call it a TEC kit. I bought one but never used it, I dont think the yoshi is load at all atleast compared to some other exhaust system like FMF.