Question about flexable exhaust insert near cats ??

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my single v6 exhaust has a flexable section before connection to cats but ssv v8 exhaust system are rigid no flex, Is there a reason?, and why is it there, What purpose does it serve on the standard VE V6 single system??

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Says you are a mechanical engineer mate, shouldn't you know the answer to this?

I'm no mechanic, or engineer, but I would guess that the flex-pipe is there to reduce the stress/vibrations on the pipe when the engine is under load.

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yes,yes may be i should have said thats besides reducing stress and vibrations on the system does it serve any other purpose or is that it ??