Consider the fact that tuners attend international races with more or less 5 different types of exhaust pipes that all fit homologation.
Having tested a small sample of different ones, it does change the engine’s behavior considerably.
There are also different diameter bushings to be used within the stinger joining the pipe to the silencer, which alter the powerband location.
Just like pipes, Elto makes silencers that are slightly different than one another to favour more bottom or top end power.
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